Glad I didn't pick CenturyLink for fiber when I moved here, but Wave G's incredibly unreliable in its own way which makes me wonder if they're using the same hardware. Kinda wish I picked Google Fiber.
Having any ISP competition at all is relatively new for the Seattle metro. It was essentially only Comcast for a decade. Now we have Centurylink in large parts of the city. I don’t think Google Fiber is widely available here.
Centurylink rates for 940/940 Mbps in Seattle are $65/mo, which isn’t as nice as $50, but not bad. Comcast charged like $80/mo (coax) for ~200/20 as recently as 2017.
Wave G is a crap service. Wave took CondoInternet and threw it down the drain. My "Gigabit" there was actually 10-20 Mbps most of the time. And where I had it, the building had wiring exclusivity to Comcast and Wave, so no Ziply Fiber or Atlas Networks. In fact, if I had to choose between Wave G or AT&T Fiber and it's forced router/802.1X, I'd pick AT&T any day.
From what I know, Wave G uses Layer3 Ethernet switches whereas CenturyLink uses GPON.
CenturyLink has a much better service which is sadly held back by the crappy ONT. But if you don't max out your TCP connection count and don't need IPv6 or can live with 6rd/HE.net tunnels, IMHO CenturyLink Fiber beats Wave G.
Google Fiber (actually Webpass) was real solid in my previous place, plus it has native IPv6 which CenturyLink lacks. CenturyLink 6rd sucks, and Hurricane Electric tunnels are getting blocked by sites now.
Most annoyingly, the FreeBSD mirrors are slow via CenturyLink 6rd so I have to route that via Tor since FreeBSD pkg lacks a IPv4-only flag.
CL does have slightly better IPv4 peering and throughput, but Google Fiber/Webpass is totally worth it for $5 more. Yes, Webpass is slightly "slower" on IPv4, due to microwave links, but the real IPv6 and support and even sticky IPs make up for me.