I've got two in mind, SeaSonic x-750 And one that is very similar to which was reviewed by 3dGuru; Enermax EPG600AWT I believe both are top notch and I'm looking for one to support a 5870 (possibly with room for upgrade or another 5870). I'm looking for the most silent one (that's why I picked the seasonic, since it's fanless at 2d mode or about), but also a very efficient one (they're very similar in that criteria). However, the seasonic seems to have a bit more out wattage output, and it is slightly more pricey (but money isn't THE problem). Ideas? Thanks!