Let's say I wanted to build a modest micro ATX system in the Temjin case. The review said to use a modular PSU or it would get crowded in there. Other articles have stressed the importance of not buying too powerful a PSU if you don't need it (I don't). I think it would be either the Corsair CX430M or Seasonic G series 450w. (Rosewill Capstone is actually a bit larger?) As I gather the Seasonic is "better" in some sense...but should I care? Any circumstances in which you would strongly recommend one over the other?