These cards worked flawlessly with the GoPro Hero 3+. Instead of opting for the bigger card, I got two smaller cards to start with. That way I could transfer data to my laptop while still using the other card. If you're wanting to do an un-assisted, large record, like a time-lapse, or something, opting for the bigger card is smart, but for my usage being able to swap back and forth was invaluable.So far, no hiccups or problems, even with the faster, more beefy shooting settings.