Quick WiFi card for gaming?

My powerline is kinda unstable at the moment and the cables look ugly, so im wondering if anyone could recommend a decent wifi card that is still quick enough for gaming? i usually get a decent 15-30 ping (depending on what servers of course) and would like to keep it, any suggestions would be greatly appreciated

http://www.overclockers.co.uk/showproduct.php?prodid=NW-064-AS