I'm getting a Q6700 (I know I can get a Q6600 and OC it but I get a really good deal on the Q6700), and either an 8800GTS (G92) or a next gen card.
I doubt that I would go SLI although having the option is nice. I want to say a P35 would probably go well but I wanted to get some other recommendations.
From what it sounds like the 780i isnt going to be anything special.
Having the SLI option is nice, yeah, but the mobo will cost about $100 more, if not $200 more, and you'd need a more expensive PSU too. Do you have, or expect to have, a monitor with 1920x1200 or more pixels?
i spent ages looking at motherboards, and asus, gigabyte and abit all offer good P35 boards. in the end i found none of them were perfect, and so had to decide based on what features i wanted most. i found the gigabyte P35 DS3R to be most suitable and am happy i chose it
i read too many complains about memory not being recognized in asus boards, plus the heatsinks in on the asus P5K-E SLI board are crap and overheat. on the asus P5K the extra PCI-E slot is useless unless you use crossfire
with Abit i thought the PRO was the best that they had to offer, but it was £30 more than the gigabyte board