I have the K2 Formulas now. I don't have much experience with different bindings, but I have had no problems with the Formulas. There are a lot of things you can adjust on the Formulas. My style of riding is all-mountain freestyle... and they seem to do well for that. Before I had them I owned a pair of Rome 390s. They were just as good as the Formulas IMO. I have the bindings on a K2 Darkstar... will soon be putting them on my Parkstar.
thats awesome mannn, thanks for telling me this,
how responsive you think they are ?