There are various card stocks, card finishes, even the way cards are "cut" or "punched" out. They all make a difference. "Air Cushion Finish" is a standard Bicycle and Bee finish. The "higher" quality cards will have the UV500 "Air Flow" finish, which a standard "Printer's" high grade finish. You also have a "Linoid Finish" which is used on Tally-Ho cards. Besides the different card stocks, the combinations make a big difference in card handling. The card "cut" also makes a BIG difference when handling cards. Bicycle decks are "roller" cut by the sheet, so the card edges are "sharp" compressed by the roller cutting wheels. This causes the cards to have a "knife edge" (thinner than the actual card). A "Die Cut" "stamps" the cards by deck like a cookie cutter, causes the card edges to come out "square" without a sharp edge. It's also called the "Gambler's Cut" because it allows EXTREME card handling like one hand shuffles and riffles with ease! I have over 375 decks in my collection, all types, finishes, cuts, in fact even decks with the same cut, stock, and finish can "feel" different depending on the ink used! It can hurt your brain just thinking about it!