Hey man. This is probably going to sound crazy and some people will probably tell us its the socks or that we're stupid, BUT I completely agree with you.
I've currently got the Blue corrals on HEAVY rotation and the XMAS (don't really rock them as hard, but they've got a few miles of city walking in them). For some reason the Blue's fit better. They're more comfortable and my foot does not seem to be far from the ground like they do in the XMAS. Anyway, this could be due to the fact that I wear the Blue a little bit more, but I agree with you in the sense that there does not seem to be a consistent fit across the pairs.
I've got the Red camos and the Volts coming in tomorrow via NDC, so I'll let you know how those work.
Call me crazy...