Overall, I personally find the EVGA GS to be a bit overrated, and this unit is not much better. I just can't deal with 3.3V rail load regulation at 4.7%. That's way too high for my liking. Ripple, seeing over 70mv. Again, I don't like that. I just don't think it's that good. The only thing going for this and the GS is the full modularity and the pricing. The Corsair TX V2 is a much better performer than both of these, and that is an old budget oriented unit form years ago. Seasonic needs to step up their game when it comes to these units. I've seen much better, such as the Silverstone Nightjar 520W.
Then again, I'm a lot more strict when it comes to normal people with this stuff. What is "good" to some of you is probably considered "poor" by me. Or your "Excellent" is my "good". I do recommend the GS series very frequently in many builds. It's an average PSU, and so is this one, but I don't like that 3.3V regulation. If it was lower, I'd be much happier.
Oh, and great review. Toms has better PSU reviews than any other site.