I have used 2Samsung 1lexar 6sandisk 1Kingston ..the Samsung gave me the most problems errors the rest I still use just bought card readers and use most of em like flash drives I was looking at the 64 gb cards even though not officially supported can't get a confirmation whether these work or not......still searching here.....sandisk all the way never had a problem with them

Originally Posted by dbenney

DO NOT count on a a class 10 card giving you 10Mbs transfer speeds. I bought a class 10 PNY and get very inconsistent speeds(using sd speed test). i get anywhere between 6.5 and 8 Mbs, usually around 7.6Mbs. you may want to test some different ones or post in Q & A and see what results others are getting with different cards. No sense in buying a class 10 if class 6 wil yield the same results.
of course my read speeds are around 31Mbs, but it seems write speeds suffer greatly on these phones.

I wonder if for recording video, a cheap class 3 will do?

The best sd cards to get are 32GB class 10's,most systems will support 32GB beter than 64GB.

I buy the random read write Class 6 vs Class 10 argument when speaking of mediocre quality cards.

Class 6 32GB.

i wouldn't worry about UHS cards as they require a different voltage to achieve that speed. the evo isn't capable of the higher voltage, causing them to fall back to a standard class 10 rating. within the class rating system, it'll still vary, my class 4 beats out my class 10 in both reads and writes. san disk cards have definitely lasted me longer in overall life, samsung has also been very good to me. bad experience with lexar and a-data.