Thermaltake? (the CWT built Toughpowers are good, most of the others aren't)Here are known "good" brands:
Antec
Enermax
Silverstone
PC Power and Cooling
Cooler Master
Thermaltake
Seasonic
OCZ
Sorry if i missed any but those are generally the "good" ones.
Other companies such as Corsair are beginning to stand out also.