They have already made several recomendations to you. Pick one and go with it. I myself purchased the sunbeam core contact. Cant tell you how it works yet, as I havent had time to build my system. From across the board though, people were telling me that it is one of (if not) the best. So bite the bullet and pick one. You can also pick (insert brand here) and try google searching it and read reviews. That's what I have done in addition to asking questions on these forums.
-Pure
Core contact is one of the best for not a lot of money from everything I've seen about it. The next step would be water cooling, which could be a lot of work if you don't know what you're doing.
So just get a Core Contact Freezer with the 1366 bracket.
out of all the coolers on the market, i would save up monies and get some good water cooling stuff i am not a big fan of air cooling, not complex enough for me