i am not sure how someone on the internet can tell you if they are soft or not. my kaijus has enough support to do ICEcoast blues and blacks with no problems.
i think the zooms are rated to be stiffer, or hit up the local shop and try them on. best way to do it!
One note though that no one seems to bring up is that these boots have a big footprint. (big to me i came from Salomon) So bear that in mind with bindings etc.