I myself would look at one of these two,
http://pcpartpicker.com/parts/compare/gigabyte-wireless-network-card-gcwb867di%2Ctp-link-wireless-network-card-tlwn822n/
i use the TP-Link myself already on one pc and am very pleased with the performance.The other one has the advantage of being dualband and having the option of bluetooth,it still keeps the advantage of a movable antenna.