I bought the Hustler Mini Fastrack Super Duty by recommendation of a local dealer that sells several brands including Scag. This machine is very similar. I've only put 15 hours on it in half a summer, mainly because it cuts in half the time of other mowers.
Only problems was a hydrualic line came loose and needed to be re-clamped on the transmission.
Cuts normal length grass great, but it struggles with anything overgrown compared to larger models.