I definitely wouldn't call the Malavitas soft. Flux RK30, Union Contact and K2 Hurrithanes are soft. The Malavitas are mid flex, good for all types of riding but don't excel at either. They are both good bindings, excellent baseplate construction, good, comfortable highbacks plush ankle straps. The Union toe caps and ratchets leave something to be desired and the Burton clamps are a bit pricier. IMO, the Malavitas get the nod because ReFLEX and Living Hinge tech is awesome. Malavitas feature Autocant where Union has normal footbeds.
Both solid choices, either way.