I have a baby sportster with a Liberty sidecar that is pretty much sportster specific. Since this is my first and only rig, I can't compare with any other rig. they take a lot of getting used to. not a car and not a bike. None the less great fun.
My sidecar is currently going from my BMW R60/2 and onto thh w650, hopefully have the project done in not too long as the dog really liked going camping in the rig.
Need to bust the welder out and get a sub-frame built.