Which router works best with ATT fiber?

The AT&T Gateway that AT&T Requires you to use can serve as a router.  If you feel it doesn't do everything you want a router to do, you can set it up to treat a router you provide in IP Passthrough mode.  Most routers will work that way.

If you don't already have existing equipment (for example, you're coming from a cable internet service that provides the all-in-1 type device) I'd probably try what AT&T gives you and see how that works for you. They provide what you'd consider a router and WIFI access point, similar to what the cable companies hand out.

If you find that equipment doesn't meet your needs you can go out and get your own. If this forum were more active you'd get 100 answers on the "best" setup is. Not a single correct answer to be had.

If you already have equipment, fairly good chance it works fine with AT&T Fiber, provided you do 2 things:

-Set the device AT&T gives you into IP Passthrough mode (there's directions on how to do that)

-To avoid potential hiccups, change the IP range your router hands out to something other than 192.168.1.x -- that's what the AT&T devices hand out and there have been reports of conflicts. Mine hands out 192.168.22.x and that works fine.