My initial leaf vac was an Agri-Fab Mow N Vac that I purchased new it lasted about 15 years before the cart fell apart and the plastic chute parts needed replacement. I rebuilt the cart and replaced the plastic parts for an added investment of $250.00. The unit works great and I can't complain.
I purchased a Cyclone Rake a couple years after the Agri-Fab for use at my weekend getaway in Michigan. The Cyclone rake started showing wear and tear after 3 seasons and after 5 years the canvas had holes in it. The sixth year the unit inhaled an oak stick and it broke the crankshaft in the engine.
I replaced the Cyclone Rake with a well used/worn Trac-Vac, the Trac-Vac has no plastic parts to crack and no canvas to wear out. This has been the 6th year using the Trac-Vac that was well used when I got it, it still works great with a nice clean path behind it.
My vote is for the Trac-Vac.
I pull the Agri-Fab around a heavily wooded 2 1/2 acres with a John Deere 420. The Trac-Vac is pulled around a heavily wooded 1 1/2 acres by my 1962 Cub Cadet 100.