Where does this argument stand now? I'm putting a medium level system together for gaming and am dumbfounded by the division over this topic. I'm beginning to think the pros can't even prove which is better. I'm not trying to start a heated debate here. I just want to buy a good power supply for the right price. I'm beginning to think both can be good but I'm thinking the single rails would be more reliable. Maybe a better question is what is the most important thing to look for in a PS?