Yeah, I use the CCC. I think it's pretty good too, just make sure to set it to the "System Skin" and it doesn't run slow at all (that stupid platinum look is what slows it down).
I find it much more convienient and easier to access than the control panel; just right click on the desktop and choose CCC and you're there.
Once again, make sure to hit the View button at the top to get to the real view from the "moron-proof" default they set.
I like a lot of the tabs better - Overdrive looks snazzier, you can choose either the preview mode for 3d or just "No Preview" which is the page with all of the options just like in the old control panel.
All in all I think the CCC is really solid, the only thing that's annoying is that it takes up so much RAM, but I guess it's not much of a problem when you've got a 512MB or more.