I don't mean to brag or anything but I'm seriously going to buy either E6850 or Q6600 G0 on/after July 22nd. However I'm leaning a bit more towards the E6850 since it'll run cooler than Q6600 G0 becouse I'm on air (check my sig).
My E6700 is my 3rd C2D this year and its VID is 1.2500v and at stock voltage it could get Orthos stable up to around 3.33ghz!
At 3.6Ghz like you, I was using roughly the same voltage, 1.38v or less
at 3.73Ghz, I can get it stable with only ~1.42v under load.
Thanks to P5K-Dlx's "voltage damper" so I only have very little vdroop.

I'm expecting the E6850/E6750 to do much better than my current semi-golden E6700, I hope..