Can't believe nobody has said anything yet. Anyway, I've got the ThermoEngine Pro from <A HREF="http://www.3dcool.com" target="_new">these guys</A>. They also have the SK6, which is even better, but pricey.
<A HREF="http://www.coolerguys.com" target="_new">CoolerGuys</A> also has a good selection. Read Tom's review on HSF's and take your pick.
Whoever thinks up a good sig for me gets a prize :wink: