I had the Vendetta 2 on my old q6600 and was perfectly happy with it. Like Edleake said, it is very good for the cooling, if a little noisier than some of the more expensive ones. If I remember correctly it ran at load under 40.
I have heard good things from a friend about the V8 and believe the V10 is out but don't know if anywhere has it yet. It is quieter than your average case fan from what I have heard and keeps C2Q's very cool under fairly substantial OC's.
I am currently using the Noctual NH-U12P 1366 Version on my i7 and it seems to be doing a pretty good job for me so far. I'm still experimenting with my clocks but I haven't reached a temp i'm not happy with yet.
That's just what I have been through in recent history regarding coolers, hope it helps you make your decision.