I believe some also charge resort fees on top of or instead of the parking. At the Hilton, parking is$10/night, but no resort fee. We just stayed there last week and could hardly have been more pleased.
I can also say I saw little in terms of non-Disney shuttles other than the DTD buses or Bonnet Creek bus, but there were a number of unmarked ones, and thus I have no idea who they served. BTW, if you pick the Hilton, you still get Extra Magic hours and you are the first ones to be picked up and dropped off on the shared shuttles. Plus, of course, it's an easy walk to DTD.