Am about to purchase a Hustler Fastrak but came across an Exmark LazerZ HP 44" that is 2 years old and has 160 hours on it. Guy says he is selling it for his grandparents who rarely used it (? ?). He is asking $5000. Is it worth it? I am about to spend $4300 on the Fastrak 52" new with Kohler motor. Would I be better off with the used Exmark? Am cutting about 2 1/2 acres residential.