that execuhitch looks nice. no audi or minivan for me tho...
i had uhaul install my receiver. installation quality was good. but they do a ton, so my impression was that it's largely dependent on who's there that day and how busy they are. i imagine beginning of summer would be bad. also, depends on if you just want the receiver installed or if you need wiring done for brake/signal lights. for the most common makes, there's conversion harness that just plug in and are tough to screw up. others require some know-how and experience.
the receiver quality itself is fine, i think it's made by draw-tite. but that would depend on what you're using it for. for a bike rack, no problem. if i'm pulling a boat or something, i'd be more picky.