Did the stick concerned for the work after we had to collect a bad experience with 8 GB USB flash drive (data loss). Have the memory card with the tool of the computer magazine c't "H2testw 1.4" tested to check whether the card is free of errors. Test is without problems druchgelaufen, everything OK. The write rate was achieved when tested at about 12 MB / s and reading at 15 MB / s. Am completely satisfied with the speed. Sure, there are faster USB sticks (eg from Buffalo) but are also significantly more expensive. I would recommend a memory card with a clear conscience. In addition, the card including card reader is super small that is only about half the size of comparable USB flash drives, rather smaller.