My Nexus 6 screen still looks fantastic. Wish I could get a new one with an updated CPU, fingerprint reader, faster storage, better camera, and the same screen + form factor.
Hell I'd take, nay, I'd pay premium for a Nexus 5 (pre-X) updated with new components. In fact, I reverted to my Nexus 5 when I found that it's still working fine after 2 upgrades, and it is a pleasure. Sturdy, light, perfect form factor, solid battery life 5 years on, and gets all the new Android goodies.
I miss the good ol' days when smartphone form factor wasn't expected to accommodate portable video playback as a first-class citizen. Honestly if I want to spend extended time watching a video on the go I'll carry my tablet with me =/
The Nexus 5 came out late 2013, the iPhone 4 in mid 2011, so a little over 2 years. Also I believe newer devices tend to be less snappy, as the tendencies for grand flourishes of OS animations and hardware performance optimization seems to be moving at different paces.
I find the Nexus 5 snappier than every other Android device I have used since then including powerhouses like the 5X, 6P, Note 7, and snappier than many modern iPhones I've used in my dev shop work (5S onwards, haven't tried the X).
It's only technical downside is a lower max screen brightness than other devices, but I personally prefer my screens not overpowering my eyes anyway.
I just bought three 5x's on eBay refurbished for my family, each for $160-200, to run Google Fi. They'd all boot-looped-to-death on their previous owners, who had sent back to Google/LG under warranty but then moved on to new phones.
So far so good for me. Their screens have minor scratches, but they have new batteries and logic boards. One has a non-working headphone jack but is otherwise fine. Wait, actually that was the fourth one, that we sent back under warranty.
