I want to buy an aerator this year to offer the service in the fall and also to use to prep jobs for hydro Seeding. I was in Lesco the other day and the question was brought up about where I am going to buy my aerator. Untill I used this site I knew nothing about PLUGR but all you guys have sold me on it. Of course the lesco rep told me why I should by their aerators and he told me he used something like the PLUGR and the thing bounced all over the place when you went over rocky or ledge areas. Is this true? How does the machine perform in this situation? He also said there are more moving parts that can brake. I'm sure he was trying to make a sale, but before I drop more than 3 grand on the PLUGR 800 I want to hear from you guys for some reassurance. Also has anyone used the Zoysia Transfer Tines? They look much larger and I think they will make more dirt for overseeding and renovation. Any feedback will be appreciated.