Newegg.com - APEVIA ATX-CW500WP4 ATX 500W Power Supply 115/ 230 V UL, CSA, TUV, CE - Power Supplies
This look good? I figured I'd jump to 500 if I ever planned on going larger. Also it has 2 fans, and 2 12v rails.
If you wanted a 500W, I would suggest:
Newegg.com - Rosewill RP500 ATX12V v1.3/ EPS12V 500W Power Supply 115/230 V CSA, CB, TUV, FCC, UL - Power Supplies