Quantum Fiber vs. Optimum Internet Providers Compared

Quantum Fiber brings superior internet speeds and reliability at an appealing price

Quantum Fiber is a new, all-fiber brand owned by parent company Lumen Technologies. Lumen is the seventh-largest ISP in the U.S., based on its combined internet service of both all-fiber internet and DSL. In total, Lumen serves about 3 million customers [1]. Quantum Fiber is the all-fiber brand of Lumen. A second DSL-based brand also owned by Lumen is known as CenturyLink. We will review CenturyLink’s DSL service separately, as the two brands are very different in what they offer customers. Quantum Fiber is a very strong choice for internet service that earns good customer satisfaction ratings. If you sign up for Quantum Fiber, you’re going to get lightning-fast speeds and reliable service. Quantum Fiber offers clear, low pricing for gigabit fiber speeds that run up to 8000 Mbps. Fiber speeds will provide you with an internet connection that can handle any use you want from a home internet connection, including heavy streaming and gaming.

Great prices for Quantum Fiber plans up to 960 Mbps

Your prices will be good for Quantum Fiber. The first-tier price for all-fiber service will be $30/month for 200 Mbps. With any of the Quantum Fiber plans, you will get the use of a 360 Wi-Fi router for free. Quantum Fiber has no data caps and no required contracts. That means you won’t run into unexpected data overage charges or early termination fees. We like this simple, affordable pricing for fast fiber speeds. It's one of the best deals you’ll find on fiber internet.

Good initial prices followed by price hikes

Cable internet is the chief type of connection that Optimum provides its customers. Because of improvements to cable internet technology, you can get gigabit download speeds from many cable internet companies like Optimum. You just won’t get the same upload speeds from cable as you will from an all-fiber connection [3]. Whether you get the usual cable service or all-fiber, you will get good prices from Optimum, and those prices will be locked for 2 years. Here’s an example. You’ll pay $40/month for Optimum’s first tier plan, which is up to 300. That is a good price for these speeds. The catch is that after those two years, standard prices will take effect, which will spike your bill higher. That may be why Optimum is seeing year-over-year declines in its cable customers [4]. The price hikes may be pushing people to other options at the end of their two-year promotion.

All-fiber internet from Quantum: the latest and greatest technology

Quantum Fiber uses the newest internet technology available. Their fiber-optic lines send data using light signals instead of electricity, and that’s why fiber is so much faster than any other kind of internet technology. An all-fiber connection will give you symmetrical speeds and enough bandwidth to handle any internet activities you choose. If you get a gigabit fiber plan, you can have up to 10 devices doing heavy streaming or real-time games online, and you will still have smooth performance. In some cases, though, Quantum Fiber advises that it may need to run Fiber-to-the-Curb (FTTC), with the last few feet of line to your house connected with coaxial cable. This is important, because even those few feet of coaxial cable will slow your upload speeds. Most of the time, that will not be the case, and you will get the all-fiber connection known as Fiber-to-the-Home (FTTH). But it is important to understand the difference in performance just in case you’re in that small minority that will get an FTTC fiber connection. Even an FTTC connection may still be the fastest internet in your area, though, and a Fiber-to-the-Home connection will definitely be your fastest choice.

Cable and fiber both provide fast download speeds, but cable's upload speeds are slower

With hybrid fiber-coaxial (HFC) technology, Optimum gives its cable customers gigabit download speeds but much slower upload speeds. That’s typical for cable internet service. Optimum is comparable to other major cable internet providers such as Spectrum and Xfinity, offering upload speeds at a maximum of around 35-50 Mbps. Optimum differs from the cable internet competition because it is also launching into the all-fiber internet market. Optimum’s current fiber internet customer base is small but has doubled in the last couple of years from around 100,000 to over 200,000 subscribers [4]. By 2025, Optimum plans to create over 6.5 million fiber passings [5]. Fiber internet’s most striking advantage over cable internet is that fiber offers symmetrical upload and download speeds. This is a game-changer for online gaming, videoconferencing, and large homes with multiple devices. When Altice merged Suddenlink under the Optimum brand, the company had two distinct “footprints” left from where the old Optimum and Suddenlink coverage had existed. Suddenlink’s coverage area had been primarily in the South and West. Optimum was strong in the Northeast, and particularly in the tri-state area of New York, New Jersey, and Connecticut. Now, the fiber buildout is fastest in that tristate area [1]. Your chances of getting fiber internet from Optimum in the next year or two will be better if you live in the tri-state area.

Get free use of a  360 Wi-Fi mesh router or use your own router

If you order a fiber plan from Quantum Fiber, both your equipment and installation fee will be included free of extra charge. Keep in mind that equipment fees and prices do change with various promotions, so make sure you check with your customer support rep on current fees when you call. If you use the free router included with your Quantum Fiber plan, you will get their 360 Wi-Fi system. 360 Wi-Fi is a mesh network, which is much more sophisticated than a single modem/router [2]. You will be able to set up extra Wi-Fi Pods to ensure seamless coverage of your entire space, which is especially helpful if you live in a large home or one with thick walls. You will also have the option to use your own router. The only drawback is that Quantum Fiber tech support cannot give service or information for your personal router the way they can support their own equipment.

No equipment rental fees, free installation with Optimum plans

Optimum will provide your modem/router as part of your monthly plan fee, with no extra rental charge. If you have a compatible cable plan, you may even get a Wi-Fi 6 router, which will give you higher speeds for multiple devices than Wi-Fi 5. Fiber internet plans from Optimum will often include the Wi-Fi 6 gateway as well. If you would rather use your own modem and router, Optimum will allow it. Just be sure to check for compatibility with their specs. Standard installation is free with Optimum plans.

Quantum Fiber earns high customer satisfaction ratings

Because the split in branding between Quantum Fiber and CenturyLink DSL is still very recent, we have to interpret customer satisfaction rankings that were previously based on the name “CenturyLink” for both brands. Customer satisfaction is much higher for Quantum Fiber than for the DSL provided by CenturyLink. The American Customer Satisfaction Index shows that split in results by dividing “CenturyLink” specifically into fiber and DSL. Fiber (aka, Quantum Fiber) ranks 16 points higher than the DSL service [3]. For Quantum Fiber, these customer satisfaction rankings tell the story clearly. You are likely to have a great internet experience with Quantum Fiber. To avoid confusion, be aware that there is still a certain amount of online cross-marketing between the two companies. Pay attention to the speeds available, whether your internet source labels it “Quantum Fiber” or “CenturyLink.” If the speed is above 200 Mbps, it is a Quantum Fiber product. If the speed is 100 Mbps or below, it is CenturyLink DSL. Overall, we highly recommend Quantum Fiber for its top-of-the-line speeds and reliability, great pricing, and good customer satisfaction ratings.

Optimum customer satisfaction: the big question mark

With so many seemingly good points to its service and pricing, why has Optimum’s customer satisfaction scored significantly below average according to J.D. Power? [6] A random sampling of online user reviews seems to indicate two major complaints. The first is outages and failure of technical response. The second is a more general dissatisfaction with the phone system, being transferred around to different departments, and getting contradictory responses from different phone reps when trying to solve billing issues. Because this is a fairly even distribution of complaints, it’s likely that Optimum is just not quick enough in responding to customer concerns, whether they be technical or billing-related. We can’t know the reason for this dysfunction. Often, these kinds of responsiveness issues happen when companies are understaffed or have high staff turnover in their customer service. But until Optimum gets better ratings, we have to give them only 3 stars for customer satisfaction.