I've actually been looking at PSUs with some interest lately. If one is building a system all the many different brands of PSUs can be confusing. Personally I'm using a CoolerMaster GX650 (the newer version), and I've had mixed experiences with my previous PSU brand, ACBel. The 620w ACBel I bought more than 6 years ago for my Brisbane machine still works fine and I've repurposed it already to an office PC whose PSU had died. However, we've had two other ACBel units die already after just about 2 or 3 years of use. So not sure I'll buy ACBel again. FSP and Seasonic look good, as well as Gigabyte, but I haven't really taken the time to read reviews because I'm not actually gonna buy yet. Other brands I have access to are Aerocool, Cougar, Corsaire, Thermaltake, Huntkey, Enermax, Silverstone, Antec (kinda pricey though), etc. So which of these would you actually trust?
I'm a little bit snobbish with PSUs these days. I only use Seasonic in my own machines, and for others I'll either use Seasonic, Antec, or Corsair; depending on the budget of the build. I'm more liable to use Antec when they're bundled with a case. I may also use Silverstone if they're bundled with the right case at the right price. I've used FSP as low-end OEM replacments and never had any problems. I've also used a handful Enermax's, and they were decent but seemed to die around 5-6 years. So basically:
Midrange: Seasonic, Corsair
Lower-End: Corsair, FSP
Case Bundle: Antec, Silverstone