i need skis badly, my twintips are REALLY small this year. but, im 6'2, 180 lbs, and still growing (supposed to be 6'4). so im looking for rather large skis. i ski in the east all mountain, and park. i do some rails, trying to get into em more, so they have to be durable. what size should i get and what can i get for under 450, MAYBE under 500?