I havent used one yet, but Big B recommends them in the sticky for this forum as a good brand. My past 3 power supplies have been thermaltake toughpower (2 of them) and a pc power and cooling. All 3 have been running with no problems in my computers for a few years now
Last I knew, they were still good. I don't know which OEM(s) they're using, so if you're interested in a particular unit, you'll want to do a search on it. For awhile, a lot of stuff was using CWT (ChannelWell Technology) platforms: Antec was one. My OCZ ModStream 450 is still going strong in my TV PC. I don't remember if they've put out anything that's made the credible reviews([H]ardOCP, PCPerspective, Hardware Secrets, JonnyGURU), but then, I don't get to browse a bazillion things anymore because I just don't have the time.