Of the 30ish percent of the time I spend in the park, I pretty much just shred rails but still hit jumps when the weathers good.  I have K2 Revivals for this year and couldn't be more stoked-those skis were basically built for me.  They destroy all mountain, pwn in the park (I typically enjoy stiffer park skis, even for butters, etc and find the Revivals to actually be pretty soft), and are really stable at high speed even with the zero camber.  You can't really go wrong with either ski though (from what I've heard from people who've tried both) and I'd say your decision basically comes down to whether you like stiffer skis, or softer skis more.