Don't buy the ADATA 8 GB card.
I bought the ADATA 8GB Class 10 from newegg a month ago. You can also read my review on neweg (second post). It's very slow. It gives me speed of 4-5 MB/sec when transfering file.
I have kodak playsport zx3 pocket wateroroof HD camcorder and I transfer the file from camera to pc usig kodak usb cable. I also tried putting the card in seperate card reader than transfer file but same speed.
My 10 year old usb drive give me speed of 6MB/sec. This is class 10 so it shoul be at least give me 10MB/sec.