class 10 is fine for your current needsRead all the thread and now I'm more confused than never. I just need a 64GB (because it seems to me the best price/capacity ratio) to store some photos and not worry with storage. No plans to store any apps, shooting 4k video or anything like that. I don't want a card that suddenly fails to be recognized or having a slight lag when storing a photo compared to internal memory. Do I really need a U3 or is UI or even class 10 fine for this end?