Dang I didn't see the post above about a 174 3.2 for sale...
Bought on last week and stuck it on the sled. In the powder or basically anything other than hard pack, it is so much better than the 280 it's not even funny.
Hard pack she lights up a bit
Time will tell but as of right now I'm calling total BS on the claims of the 280 track lifting. It trenches, 3.2 lifts up on top and takes off. 3.2 will trench and grind when it gets gnarly going, but then when the 280 would trench and trench and stick you, the 3.2 gets up on top and takes off.
As far as handling, it's a little difference. 2.8 is better carving side to side coming down hill. Any time you are on the gas though the 3.2 is better simply because its not dug down into any given snow as deep.
My opinion and it could change with time. I think I'll put the 280 back on for may and June.