My cousin is looking for a sled for his wife and is on a budget. He is thinking about an F5 for her. Tell me about them. My wife rides a F6 so I know about the great ride and handling. How is the F5 motor in the twin spar? Does it have enough power? He may get her a sabercat or firecat instead if the motor is a real dog. I know it will top out at 80 but does it pull hard until then? Let me know he is really frustrated that his older sled died.