I find my newer Gold SPG card kind of flimsy compared to my old base member SPG card. But there is something to be said for flimsy plastic or even temporary paper FF cards--they fit in my wallet better. I often prefer to carry these paper temps unless I'm going to need the "swipeability" (for example for the magnetic strip on the AA card that allows me to get AA miles at a JL kiosk check-in) of a full-thickness card.