I come from the gaming community, and I say:
"There is no wireless in the planet that can replace a stable, low ping Cat 5 under the carpet, when it comes down to headshots".
Now, really, some games are uber-sensitive to channel hopping these wireless devices are prone to doing.
Some will drop you out of the game completely, some will lag you out, some will LITERALLY crash the game.
If you can get wired, DO IT. It doesn't matter how good the wireless is, a cable will best it, eleven out of ten times.
I don't care how deep are you into Wifi specs, as a home user, a cable will best a wireless, every time. Even the crappiest, scratched, nailed on ethernet cable will trump a wireless connection.
And even when you DO find a neat wireless, it will suck 2 amps out of the wall, and probably burn red while you do it, or all the time.