For the past week i've been playing with EVGA 780i FTW, MSI p&N Diamond, Rampage Formula and a MIIF. The Maximus i am the most pleased with so far.
I've ran a couple of 1 hour Blend/Small FFT with no errors. Definatley more to Stability tests to come.
Memory is on auto, i'll tweak that after i find my max fsb. Needless to say I'm pleased with this 9650 and Maximus II Formula.