At first I didn't think paying up to get this card reader would be worth it. However, after upgrading to The Lumix S5 and shooting large 4.2.2 files and seeing how long it took to transfer, I figured I would make the investment. Thank god I did! Transfer speeds hover within in 5 points of the advertised speed on my sd cards (v60 250mb). Files transfer so fast, I have to double check to make sure it was successful. This reader is worth the money. Oh and it's magnetized! I was able to stick it right on to my PC in a easy reachable place. Just perfect!