I have had a trac vac model 560 for about 15 years. I have a JD 318 tractor with the unit mounted on the tractor. The hose to the bagger cart wears at the bend due to debris flying through it. I have replaced this hose several times through the years with a much better quality wire coil polyurethane industrial hose. My original motor was a 5hp briggs. I replaced the impeller once after quite a few years of use. Then one year i was picking up a huge leaf pile on my gravel driveway and a large rock got sucked up wit the leaves. The Motor shaft was bent and the main bearing was ruined...oil everywhere!!! Anyway got the new 6.5 hp briggs from trac vac. I have been using this new motor for about 5 years now. It is much more powerful and does an even better job than the old unit. I have about three acres of lawn to vaccuum. Lot of huge oak, maple and beech trees on my property. Without the Trac Vac i would probably be dead now from dragging leaves on tarps into the woods... I tell everyone to get one of these.