So (per SD 64GB, Lexar 400x and 600x 64, SD 32GB Extreme) after extensive testing and comparison with other I'm quite happy. Card is standard SD quality, works well in all cameras (also in those where the manufacturer recommends up to 64GB), and holds the copy their pace at about 40MB / sec. Since the Lexarkarten both be over 50MB / sec, the card while but no more than met her pace. I was hoping for a bit more pace. Otherwise P / L well, they would buy again. To Konpatibilität and reliability I would do me no head here, because everything fits.