Just want the fan? Or a Heatsink and fan?
If fan, the best right now (in 60mm) is the black label Delta, but that thing is damn loud.
If you want HS/F, you can't go wrong with a Taisol if you don't plan on OC'ing, and even if you OC, the Taisols are pretty good. I myself have an Alpha, which I have found to work really well in my setup.