I had always the thing for Atheros cards if it comes to wifi cards tho they might fairly hard to find. *company only produces chipsets; and its great backtrack(OS) just loves it

other than that cisco/netgear would be best, those would be much easier to find. Atheros developed technology dual band so you should be getting 480Mbps or more on it. I remember them stating their combo in 2008 or 09 got over 700mbps on 4GHz .11n