Better jib snowboard? K2 WWW or Fast plant?

this is going to be my 6th year snowboarding and i am looking for a good jib park board don't care much about carving or speed. i am currently riding a 2011 burton sherlock 157 good for all mountain but way too big for jibs and with the flying v rocker not the best. i weight about 135lbs and am about 5' 11'' with size 11 boots with shrinkage tech ,i am looking for the board to be great on rails and boxes as well as moderate jumps nothing over 30ft. so im looking as the k2 www or the k2 fast plant not sure on size probably around 152 still deciding on wide or not. please help me decide on a good jib board, if there are any other board i should look at please tell me trying to stay under $500. thanks!