The upside to buying an X rental from a fleet type operation, is that whatever has failed during the rental cycle has been looked after. Plus. rentals get exercised, not parked for 50 weeks out of the year, which is deadly for an RV..or boat..or plane.
As far as mis-use of a rental..and no private owner ever did that? Chairs on roof, beach bombing, just screw ups...
Both of mine were X rentals. Both were fewer $$'s than what was being asked for by private sellers. Both were good units that cost me a bundle..just like if I had bought privately.
Gary Haupt