You can ride backcountry on any ski, i is just wether you can ski the ski right. If your a bigger guy the seth would likley be fine.
Check out www.momentskis.com they have the reno and that would be ideal for park and pow, and it's one of the lightest skis on the market. only 400$ us.
GO TO ->* www.MOMENTSKIS.com
Q: How many emo kids does it take to change a lightbulb???
A: none they just sit in the dark and cry