I've got an Enermax Galaxy here, never used. I was going to put it in my new system but I suspect that even if I went SLI it would still be more power than I'll ever need (C2D, 8800GTX, 2x optical, 4x HDD). I've read good things about the Seasonic M12, mainly like the fact that it's (supposedly) reasonably quiet. Is it worth selling the Galaxy to pay for a Seasonic, or will I miss that extra 300W?