Originally Posted by
Azurik
None... on AMEX alone I have:
Blue
Green
Gold
Platinum
Centurion
SPG
Delta Platinum
Hilton
Business Plat Optima
Business Plum
Business Platinum
Business Delta Gold
Business SPG
Corporate Green
Corporate Gold
I think you're only missing the Zync. If you get that, you complete the Amex collection and I heard they warp you to the secret Super Mario underwater world.