I was really dissapointed with the quality of these cards. The white, had black marks and smudges. The Black and Grey had what looked like oily smudges and scuffs. Overall poor quality. I tried them out and found the results inconsistent ( maybe the angle that the light hits them and reflects, don't know really). I take pride in my equipment, and stuff I've had for years is in better condition than these. I may be unlucky, I don't know how the previous reviewers can give Five Stars?????. Got to admit, Amazons returns system is excellent. Printed a postage label out, stuck it on the original package, handed it in at the Post Office, Free Return Delivery.