I'm undecided on the HSF so far, but several Hot Deal posts on the Arctic Cooler 7 for around $20 seem to be worth looking at. I'm running a Gigabyte G-Power Pro HSF on my Opty 165 (HSF has blue LEDS built into it) and I've been happy with that. I'm currently cutting a window in the case and I have two blue CC tubes to add it it, so all of a sudden I've been bitten by the bling bug (also finishing up another window kit on a Chieftec full tower Dragon case in green). I've heard good things about the stock unit, but those blasted blue LEDs are calling out to me as I sleep.