PSU Info Request

Hey folks

Iam looking at two PSU's at the moment

a Antec High Current Gamer HCG-620 and a EVGA SuperNOVA NEX650G Gold

the question i want to ask is about ratings and rails

the antec is 80+bronze rated with a single 12v rail while the EVGA is 80+gold rated but has four rails

which is better, does the 80+ gold rating on the evga make it better than the antec even though it has four rails, or does the antecs single rail make it better even though it its only 80+ bronze rated

any help and information would be greatly appreciated

I have the Antec HCG-620 In my current build and have had No problems with it at all.