Hi Russ.
I want the lower wattage for two reason, 1) I'm not overclocking a powerhog (I've got a CuMine non cb0 600 overclocked to 800 and a nearly minimal setup) and 300 and above just seems wasteful IMO 2) I want to crimp every cent that I can, while trying to get my system to run as sliently as possible (the Silencer from PC Power & Cool at 285 watts costs about 99 bucks, and I don't want to spend that).
From what I've seen of the VE series from Enermax that gets my attention is the dual fan configuration, and from what I've heard, they're gentle on the ears.