Whats the best sealed unit for cooling

[CaNsA]

FWIW i have the antec 920 with 2 akasa vipers silent fans.
Works well and is very quiet.

 

[Uncle Petey]

ive been using the h60 and its way quieter than any air cooler out there if you use the right fans.....

Really? What happens when you use an air cooler with 'the right fans'?

 

[Slackness]

I use H55 Corsair on my AMD 6 Core Phenom II 1055T *nix box, and whilst encoding video @ approx. 99% on all cores it stays below 40 degrees. When not encoding cpu sits at a nominal 27 degrees.
Thats Antec box with 9 x SATA drives, bottom intake fan on low setting and PSU rear intake, no GFX card and top outlet fan.

Oh and its very quiet!!!