My vote is for the Panthere. It is a classic. The Panthere designs are more historically significant to the brand, and to me is says Cartier. The Clash, well it's new, it's less expensive, and could be anyone's design. Don't go with a Clash if the motivation is its less expensive. If you really like the Panthere more, and if you are like me, you won't be satisfied with a substitute. Then you will still want the Panthere, and a good chunk of your money will be tied up in the Clash. But the best thing to do is to try them on and see which one really makes you smile the most.