I bought a pair of these during Amazon's cyber Monday sale ($38.98 ea!).  One is working great in my Galaxy S3 (synched around 40 songs/minute using MediaMonkey in MTP mode) and the other I was going to use with the SD adapter as a backup for my DSLR, but after doing a long 1080p video test with no issues, I made it my primary card and sent my old 32gb SDHC to the bottom of the camera bag.