If you're looking for performance, the Scythe Infinity seems to be showing incredible results. I'm getting about 44.0C under load with my Zalman 9500 (~32.0C idle), but people are reporting load temps in the 30's for E6600s overclocked to 2.8 - 3.0 GHz when using the Scythe Infinity. Impressive, to say the least. I went with the Zalman 9500 (which I do like) because it was what Fry's had at the time, although the Scythe products seem to be where it's at for cost/benefit ratio.