Never heard of Enermax before. I'm a *NOOB*
I actually considered the antec one but someone said on this forum (or overclockers.net) that the rails are BS. Something like there really aren't as much rails as they said and that the stability is out of whack. Rumors i think.
Now for the Enermax one i looked at the reviews on newegg and it seems that there are mobo compatability issues. Will is work with an Asus P6X58D Premium mobo?