I'm running CO2's, very good binding IMO. It's a stiffer binding which makes it very responsive and great for all mountian riding. However they're not the greatest park binding because of the forward lean and the stiffness, they are insane on the jump line but not really made for rails, butters, and presses. Other than that, great binding, high back with mesh to grip the back of your boot, cushioned foot bed, toe cap strap grips well, and very very light.
No experience with the other bindings
'12 Lib Tech T.rice / '12 Burton Cartels
'10 CustomX / '10 Co2 EST