I see a word like VAPOCHILL and it changes into BIG MONEY.
I use the MC-462A. I love it. It's a "big galoot" heatsink and owes its success to its mass, combined with the excellent properties of the fan that comes with it. As far as I am concerned, the only drawback is the price you pay, in terms of noise, for that fans effectiveness. The use of a rheostat really helps. I only turn the fan up to ful blast for high cpu-load situations. No, it's not cheap, but it is the best air-cooled HSF currently available. If you look at the price as an investment that will outlive your CPU and Motherboard, then it's not that bad.
Hoot