I'm with SWbooking on this one. You can't go wrong with Aussie, and it's the cheapest to boot.
I have Aussie locker in the front of my DD and it is fine on the road.
I can't answer that one, we haven't had snow since I locked my XJ 3 years ago
IMO, an Aussie will do just fine in the front end. Cant beat the price vs. performance of it.