Curlev :
Well, it is Platinum rated and has got pretty good reviews. But I would probably go with a Supernova G2 650 instead, then you will get a 7 year waranty aswell. Antec only has 3 year according to their web site.
The Earthwatts EA-650 Green is a 80+ Bronze PSU, as are all of the Green units.
The EA-650 Platinum is a much newer, more expensive PSU.
Either way, I agree that the G2 is a better buy.