need help…

hey guys im new here let me know if ythis is the wrong place to post this. thanks well lets start off by saying im looking for a more all around board nice and flex good for rails and jumps. i dont know what size board to get im interested in the burton flying v half camber and v-rocker and also the burton twin 2010 the only prob is that they come in the size 154 and 157 thats around where im at