So options: 1) VMC can't follow the blueprints for the evo board, 2) There is a high % of boards that is limited in his speed in the VMC process or 3) the evo board itself sucks.
I must admit that I'm undecided.
Personally I think it's impractical for anyone but the most hardcore tech-head to be able to remove the amount of heat coming from these chips. I defo believe the peppermining board is a better design and their software will allow folks to get a lot more out of the chips, but IMHO the price is a little steep relatively speaking considering the plausible additional hashrate average joe could achieve.
That said, from the specs I've seen posted by MrTeal and Gateway I get the feeling the w/gh will be better from the habanero, although $250 worth of improvement? I'm not sure....