Just getting into the "snowcat world". Very seriously thinking about buying a Tucker for part of our winter operations and need one with a flat bed on back. Had a pretty good talk with a sales rep at Tucker who was VERY helpful. He feels I need to be looking for a 15, 16 or 17 serious Tucker. I understand the 17 series is a very large frame "industrial" machine. What are some differences in the 15 and 16 series? Any advice on the variations is appreciated.