Yeah SSX 4 has skiing. Its pretty satisfying because it has realistic grabs and good graphics, but on the other hand the trick system doesnt revolve around skiing at all, so there aren't off axis spins available, just misties and rodeos. Same goes for the rails, you dont get points for 270ing on, you get points for frontflipping on. It has the uber tricks but you can play it realistically, and if you throw a spin and then just grab you spin slowly. So it can be pretty fun.
The extreme freeride game is going to be pretty good, I played the demo and it was fun. Has a bunch of different axises, but its focused on backcountry skiing, so is mostly cliffs and log rails, no park. Coming out some time or another.