there was a recent discussion on this bought up by me
pretty much im gonna be building a rig with a E6600 and I decided to go with the ASUS P5N32-SLI SE Deluxe Socket T (LGA 775) NVIDIA nForce4 SLI X16 ATX Intel Motherboard
my other choice was the Gigabyte GA-965P-DS3 Motherboard
but from reading reviews on newegg and searching through here, I went with the ASUS, but not by much
but from what I gathered, you cant go wrong with either one
some old out dated P.O.S.