John
I had a cheap 8 GB SDHC card that just would not behave itself in my Android phone and kept throwing errors and becoming corrupt. I looked into getting the 64 GB Sandisk Ultra, but read about all the problems on the XDA forums that people were having and went with the 32. I wish I had a 64 GB capacity to be honest with the rate at which my SGS3's camera can suck up storage, but it's sufficient, and most important, extremely fast and reliable. I've never had an error and never had to format it. Plugged it in and it was ready to go. You get what you pay for.