I like these for the quality and cable management, plus they fit very large cards.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811139018&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=