This product is like buying a good hi-fi system. Once you get used to, you know nothing else, and it was always that speed / that good.
Concerns. I did have problems initially trying to download from the card on a remote card reader and then the built in compact flash reader on the PC (it did not recognise the card). Got round this by connecting the camera. No problem. Then a week later, the card reader in the pc saw the card. No problem since.
It is expensive, but needed if writing RAW files.
Why four stars? I don't know what a five star product looks like.
Would I recommend this? Yep! It's good.