One of my best friends has an '88 R100RT. He really likes it.The R80's are a bit slow though smoother than the R100. The R100's have good mid range punch and work surprisingly well on mountain roads with a wide powerband. I liked the airheads I used to own. So simple to work on too.
If I had a BMW, the FIRST thing I would do is flip the kick-stand spring to the latching position.