Okay, my internet speed is 350 down and 20 up, and all of the routers last about a year and then start to fail (wifi stops showing up, wired connections fail to connect.) And to fix it I have to restart the router, and that usually fixes for a few days before it does it again. But the Asus n66u was faulty from the start because of overheating.
The Netgear r4300 and R4500 failed differently from each other, the R4500 had it's wifi card die in it. And the R4300 fails hold a connection to the modem, it drops every 5 minutes. (No other router does that)
Then I have about 4 Asus NT-12 that just stop getting power but that seems to be a thing with them.