If you won't to tweak and overclock your system like crazy, I would get the Abit KR7A. You can get it with or without on board raid and ATA133 support. No onboard sound, 4 dimm slots, and 6 pci. Has KT266A chipset and fast as hell. I'm getting one for Christmas 🙂 So I can't say anything from a first hand view, but I made my decision as you can see.