Whoa guys, my brother in laws sled felt tippy to me and some others. I am not used to sitting up off the ground that much and even he agreed that his sled did not instill a lot of confidence in throwing it around in the corners (he rolled it last winter in a corner). I am sure if I road it more I would find that confidence somewhere but it just doesn't feel right in the corners, in the sleds defense it probably needs to be setup properly. He has Fox float shocks up front and they can be adjusted from 20-150 psi, I'm sure with some tweaking it will have a more neutral feel in the corners. One thing, without a doubt is the track is a bit of a bitch in deep snow as it is skinnier than your standard track. Overall his sled has so many other good things about it that I always ask him If I can ride it, its a fuckin blast.
Bottom line I would trade my sled and some decent cash in a heartbeat for my bros F7, but I am happy with my beater sled for peanuts that hangs with him and other new sleds on the trails. I just end up eating a lot of snow/ice on the lakes.
If I had the cash I would look into a new skidoo or yammy.