Union Factory is another good responsive binding option. I'm a big dude on a big board and they work good for me. Had the Ride Capos and I agree with linville and Snowdog about the aluminum chassis. They're just not for me and I was really glad to go back to plastic. The Capos just felt clunky to me I don't know why. But YMMV of course.
Drinking the Kool-Aid:
NS Heritage 166X