Well what time of the year are you going? My choice is aspen, especially if you go after aspen open is done because buttermilk has the x games park and pipe open, and a park that goes from the very top of the mountain all the way down to the x games park. Their is also snowmass witch has a 22 foot pipe also and a super sick 3 set and tons of other jibs and rail and jumps, snowmass also has great terrain on the top of the mountain if it is a powder day so do aspen mountain and highlands. As far as night life goes aspen is super fun their is tons to do for a few 15 year olds.