I was looking into buying a used trac vac but wasn't sure how long they have been lasting people to see if its worth it? Would a 1,000 hours be fare to say or 5 fall/spring seasons? I try to buy only new but its not in the budget. I am looking at two of them one is a 470 the other is for a Z but I am not sure on the model. The guy claims to have about 100hrs on them.