well since you didn't state a budget i will list a few:
Mainstream one. Good and cheap. great preformance: http://www.newegg.com/Product/Product.aspx?Item=N82E16835181032&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
Low-end budget: http://www.newegg.com/Product/Product.aspx?Item=N82E16835103197&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
High end. Great performance: http://www.newegg.com/Product/Product.aspx?Item=N82E16835106241&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
I wouldnt get the budget one. H100i is a great cooler. If you're really looking to push it, the high end one it great.