I've had extraordinarily good luck with the apple AirPort Extreme. Handles wifi n traffic and is rock solid. I can regularly play twitch games over it or stream 1080 p without issue.

I went from dd-wrt on a WRT54G to a TP-LINK TL-WR841NR with OpenWRT and it feels almost exactly the same. I even setup my network with the exact same SSID and password and my devices acted like nothing changed.

TP-Link WDR3600/4300 are both solid routers with Atheros chipsets (which means they have full open source support) that are also fairly cheap.