Another very good choice for a mobo that is more modern than the P35 Bloodiron is the Asus P5Q Pro (P45 chipset). It's around $5 more than the Bloodiron, but sports a newer chipset and also has 2 PCI-e 2.0 x16 slots (run at 8x when using 2 vid cards) and onboard 1394 too. The P45 chipset is also better at overclocking the Yorkfield quads too than the older chipsets. All the other choices I agree with wholeheartedly.