kem or copag?

Kem are fine. The quality of Copag is just as high as the quality of Kem. Plus, the offwhite color used by Copag greatly reduces glare. I've not seen a deck of Kem since they changed manufacturers, although I hear the difference is small. I've also heard that Gemaco all plastic cards hold up well too, but this is only what I've been told second hand.