Who in their right mind is going to use a micro SD card in the cheapo adapters in the DSLR or video camera? Those adapters are junk and commonly lose connection with the card during any sort of vibration or shock. If we were talking full size cards, then yes I would agree that you might as well get class 10 cards, but we are talking micro cards with a device that seems to only be able to move data at around class 4 speeds... Might as well save the money and just get a class 4 micro card for the tablet.