Corsair, BeQuiet, Seasonic, Enermax, Mushkin
Most power supplies are made by big companies and are then re-branded e.g. Corsair power supplies are re-branded Seasonic psu's.
Even good branded / trusted companies bring out cheap lower end units, while these are better than the random brand/generic psu, I would recommend getting a higher end model from a trusted brand.
Avoid: Anything generic / coolermaster, antec, ocz - not bad per se but a psu shouldn't be skimped on.