biostar is 965 check out some of the posts here about it, its turning out to be a great clocker oalso for the lower conroe's.
no matter what baord your on the 6600 and above still have some nasty limits on the FSB when overclocking in the bios. the windows app's can typically take them further. but thats a sucky way to overclock.

i wouldnt get a DH unless you really want SLI and the wireless.
if your using a single video card then the DS3 is still the best way.
the P5W DH isnt going to give you the higher overclocks that the DS3 is showing.
BUT asus has been kicking out alot of bios's lately so who knows. but i personally dont look for it to be anything special for the 6600's and above.
i have one, its a nice board, the wireless was nice,, yada yada...
but for overclocking i still stand behind my DS3.