Anyone have any experience with the 550 fan summit? I found a very cheap one, and am considering it for the wife. We ride the mtns (Snowy range), but mostly trails and playing in the powder, no climbing and nothing too aggressive. Her old sled is an old Phazer 480, so this should be an upgrade. Do you think this sled would be sufficient for her to have fun? Or too underpowered? Any known issues with these? Any insight you can provide would help me out alot!! Thanks