Hi Lu(ky,
I love my P5Q pro and I susgest you to get it. Why?
1. With Ket's m1307 BIOS it have the MEM table of higher end board. I believe it with pass FSB 500 easy. My Q9550 boot @ 480 just fine (I did try higher though because I want to stable it @471 now before I think of bigger number).
2. E8500's multiplier is 9.5, Awsome!
3. It's lack 16 phase power but you won need it for the E8500 IMO.
4. About half price of its big brothers.