BOB: I currently use the 8gb pro X2 card in my D300s in the studio. I has been a real blessing being able to shoot green screen without cables. I use the Photokey Pro software which automatically processes the images onto my chosen digital background. All of this is done without me ever having to touch my computer and the images are ready for client viewing as soon as I finish the photo session. No problem with the download rate at all.
I didn't even know about this software. I do now, and I will consider getting it thanks to you telling us about it. Thanks!