I will be getting a silverstone kublai KL04 (http://www.silverstonetek.com/product.php?pid=324) and an ASRock z77 extreme 4 and I want to get a new cooler as the stock one is not going to work for overclocking. I hope to get a 4.5Ghz overclock with reasonable temps, so I am in need of a pretty good air cooler. I don't care what it costs as long as it's under $150, which shouldn't really be a limiting factor for air cooling. Please post what you think I should get. Thanks.