I am getting confused by all these different certifications, and just Psu in general. I never knew there would be so many things you need to find, in order to confirm that is is good. I am currently looking at Sliver Stone's 1000watt 80+ platinum, since it is platinum but it is also pretty small ( I think ). I have also seen Cosairs's 1000w Psu but it is a gold certification. I am building in a itx case ( Fractal Nano S ) so I need a small Psu. If someone could tell me which psu is the best or if the psu I listed above are good, that would be great!