I have a couple, but I don't tend to use them very often.
They've got most of the benefits of cast iron (except for the iron entering the food), and they stick less than even a seasoned cast iron pan.
But they're not nearly as non-stick as my good Calphalon non-stick pans, and the big pan I have has a pour spout -- nice yes, but doesn't work with a lid at all. It's also so wide that it's underneath everything else in my pan cabinet, so it just doesn't get used much.
If I have a lot to saute, and I really want a fond to develop, it's better than the Calphalons. But that's pretty rare.