This topic has been well covered in this thread, but I wanted to add a few more items for consideration:
Pull vs. Electric Start:
Some sleds are pull start and the advantage is that there is no battery to service or starter motor. Alternatively, electric start machines do not require pulling on a starter rope. My brother in law, who is a mechanic and Jet Blue pilot, likes pull starts. I prefer electric.
Studding:
There are two reasons to want a studded track. First, if you are riding on the lake, your ability to stop without studs is questionable on icy surfaces. Second, for a liquid cooled machine, the studs will throw up snow/ice on hard pack and prevent overheating.
Helmet Heater:
I would get the 12 v connection for a helmet heater. I have become a big fan after riding up in New York. A helmet heater acts like a defroster for your shield and prevents fogging and ice/snow buildup.
Just a few additional considerations.
Jetskier
