I rode my sons 550 Sport a little the day we got out.
It is light, has decent jam, and if you are a good rider, riding Muskoka trails, ( not Quebec and up north), it will keep up with anyone.
what I loved about it most was no temp gauge and scratchers non sense. Gas, oil, and go.
You can still have a lot of fun w/o spending 25k plus on a stupid snowmobile.
i have never not had a sled, 25+ is the end for me.