The good brands I think are Kingston and SanDisk. Be wary of cards you buy off tradme, there are a lot (maybe 50%) of counterfeit cards in circulation. I bought a couple of cheap 8GB SDHC cards to use in a cellphone, or as emergency backup for my camera, and neither would work in the phone, camera, or format on the PC. They were only $15-20, so I should have guessed. I think they were Apacer.