What is the difference between the EVGA GS and G2 PSU, which is better?

Both power supplies are great choices, but there are some differences. The G2 is made by Super Flower and is a little larger than the GS which is made by Seasonic. There are also a few cabling and acoustic differences, but nothing really of note.The G2 has a longer warranty and if they're the same price I would go for it as that platform has proven to be one of the best from many reviews, including here at Tom's.