R. Overall
While I prefer the Pro SanDisk for my cameras, this has worked well in a smaller point-and-shoot camera, and now in my Galaxy SIII.  Plenty of room on it.  Ultra is not as fast as Pro, but plenty fast enough for my phone, including the few photos I take.  About 1 to 1.5 seconds to write to it.  Now getting 64 Gb units, and looking at a 128 Gb (expensive).