For a reasonable price and you will get the SLI options with 1333fsb, i say a nFoce 680i board
http://www.newegg.com/Product/Product.aspx?Item=N82E16813188013
This is a little cheaper, not sure what the major difference is though
http://www.newegg.com/Product/Product.aspx?Item=N82E16813188019
You dont have to use it but its there if you want it. If you know your never going to use it, get a Giabyte P-35 DS3L or P-35 DS3R
P31-DS3L - http://www.newegg.com/Product/Product.aspx?Item=N82E16813128062
P35-DS3L - http://www.newegg.com/Product/Product.aspx?Item=N82E16813128059&Tpk=p35-ds3l
650i - http://www.newegg.com/Product/Product.aspx?Item=N82E16813188017
680i - http://www.newegg.com/Product/Product.aspx?Item=N82E16813188015
just kiding...ill look into the giga because i can't get the nf68 here for some reason....it lets me choose it but then I can't add any cpu with it! I hate Canadian dealers....piss me off