The Wirecutter (which hasn't failed me yet)
recommends the TP-Link Archer C7 and makes reference to WRT support. I have this router, and it's been rock solid for my condo since I bought it. Haven't had to reboot it once that I can remember, and I bought in September. It's a palpable step up from the standard wifi in my U-Verse box, which is also about six and a half years old now so I guess I can't be
too grumpy.