I wanted a binding this year that was good for all round riding (park, pow, groomers....) I went with the Flux DS30 and love them!! response for carving is great and still good flex for freestylin. Just my 2 cents.
My choice was between the DS30 and Contact Pro and everytime i tried the toe ratchets in the store the contact pro's were sticky, DS30's like butter that was my decision maker.
For a lighter mor responsive Flux alternative is the DMCC light. I am not a huge charger so opted not to pay the extra for them.