i like fortron, and its rohs, even though it doesnt improve performance, but its good for the environment... and i like that. so go with either 3... itd go
the pc power and cooling
the corsair
the fortron
dont get me wrong, its VERY close, but the fortron may die before the other ones... so thats why its last. pc power and cooling is one of the best, if not, the best brand for psus... i think vernong said they merged with ocz now... the corsair one is good, but only 520watts, but 12v is very good.