The Hyatt card doesn't look half bad. There is a certain elegance in its relative simplicity.

Although that said, simplicity can work against you. I am not fond of the Canadian Marriott Rewards Visa. It looks silver but it's just some dull shade of gray, and it still somehow comes off looking busy despite the plain design:



Amex's cards on the other hand are quite nice. I've actually had cashiers compliment the appearance of the SPG Amex