Though everyone on this forum bashes the DP5-6H51, I had great success with this heatsink.
I had a duron 600@1000 with it.
Now I am using PAl6035 and Taisol 742. Both are good. If you are tight on budget, get the coolermaster. IMO, there is no point in spending $30 for a heatsink to use on a $40 processor.
If you are getting a high end T-bird, I will suggest you spend the extra cash to get better cooler.