i at first bought a bought a subzero with the same intentions as you, and now i ride the board full time haha, beware of the addictingness of the SubZero. (such a fun board).
I have union contacts on it, but in addition to the two bindings you mentioned i would recomend maybe some flux tt30s or rk30 or sf45, maybe some k2 hurrithanes and indys, burton cobrasharks, nitro (raiden) phantoms, zero. I'm hesitant to recomend union bindings cause i had my share of problems with them before i finally got them to work correctly (lots of maintenance required on my part) but i think some of the problems i had on the contact would not be had on the force due to the design.
On my contacts i had the heel loop consistently coming loose.
you can't really go wrong too much, just avoid technines and super stiff freeride bindings
Last edited by twin89; 03-11-2011 at 12:07 AM.