I have been maintaining / repairing fleet(s) of Crown for about 15 years now. From Double reach and Stock Pickers down to Tuggers and pallet jacks. When I first started in the industry I repaired / maintained Hyster, Raymond, Clark, Barrett and TowMotors.
I will say that Crown has one of the simplest layouts on MOST of their trucks. MOST the models trucks are pretty tech friendly. I have had a few models that tend to be extremely glitchy but with talking to other techs it seems to be the norm.