For a while now I've been using Hoodman memory cards for their reliability. It looks like other manufacturers are finally realizing that some people use their memory cards heavily, and not always under optimal conditions.
Unless your phone is USB 3.0, you won't see any type of file transfer speeds above 25-30MB/s when moving files while card is in phone. Otherwise the slower ultra is fast enough.
Ive, got their 128gb cards in my phones, they really need to release the 256 and 512gb cards before someone else does, this waiting game is really stupid.
Close to $300 for a 64Gb card that's still not nearly as fast as internal memory? Damn, Apple's upgrade cost for memory on their phones don't look too bad after all