As far as working in snow, do you mean in dirt or plowing on pavement? Digdeep made some good points, but I have to disagree on the snow plowing aspect. I haven't tried my Deere for plowing, but my Bobcat was horrible! CTL's don't bite down, they float. So if you're trying to push snow where underneath is either icy or packed down after it's been driven on, you can't get traction at all.
Thats the difference between the solid undercarriage on the Deere and BobCat CTL's and the suspended undercarriage on the ASV and Cats.