I hate this track for deep snow. I just ordered a CE 2.5.
Anything but high water density snow, and this thing just digs, and digs, and digs some more. It's funny to look at the pictures from a recent ride of ours, 4 feet deep sugar snow..and all of my stuck pics, the sled is almost straight up and down, in a 4-5 foot deep trench. Not the same story for a couple other sleds with me, all close to equal rider skill. The other Pro in my group was not digging half as bad as me, with the 5.1 track.
I have run this track on hardpack or really wet snow, and it did do great then.