Need to buy 2 sleds for me & wife. Biggest question is what should she ride? She is fairly new to riding. She rode my old sleds in small fields. Live in Central NY and ride mostly trails. Was thinking mxz 380 fan for her. Would a 500 fan or 550 fan be too much power for her in winding trails? Also would like opinion on mxz 380 500 and 550 fans. What kind of speeds and reliability.