Almost all routers (even crappy ones) will allow you to game comfortably. You're best bet is getting one that will live a long life and be relatively stable.
If you do want performance though this is the router I use: Link
Note that I did not get this for gaming purposes. I do many backups to a server of my many devices wirelessly and the speed helps that reliability a lot. The performance on this for games is the same as the standard whatever model from NetGear (gave it away to someone so I have no idea if it still works or not).