Think of it like skateboarding. A skateboard with more pop is going to help with 2 things: Air out of the halfpipe and transitions (rails/boxes included). The same applies to a snowboard. If you were at a Big Air competition then it might help to have a board with more pop. Just as well, if you do lots of jibbing and rail riding, the added pop will be welcome. If you're just looking to get more air I'd say get a board with a sintered/fast(er) base. Of course, newer boards will generally pack more pop, but like ifresh says, unless you KNOW you need that extra pop I don't think it much matters.