depends.. I use a full rocker board for freestyle.. but I'm not hitting 25 foot jumps either... if you are going for strictly jibs/butters go with the rocker... if you want something to do a little bit of it all and hold up longer go with the evo. it will be more stable for you on jumps/carves/icy conditions...
for reference I ride a k2 www..
. but I've also ridden the kink and the evo..
The evo is more expensive, better quality from what i've seen, the kink is a softer board.. flex is easier and to me ( TO ME ) locks onto boxes and stuff a lot better.. a thing to consider is that I only used a friends evo for one day.. I've ridden the kink and a rockered jib board most of this season.. so my opinion is a bit biased to the kink just because I haven't gotten a chance to really abuse the evo.