Replying to Recommend Me a Powder Ski

I was thinking of buying powder skis from this year on sale for cheap and want a recommendation. I'm looking for something that's between 110 and 125 in width and is very poppy, playful, can handle high speeds, and does well everywhere but especially in the trees. I'm 5'8", weigh 145, and will be skiing on these mainly at Big Sky and other Montana ski areas. I would also not like to go over $500 while buying these skis on sale.