My Fast Black F6B is a keeper.
Wouldn't trade it for a BMW, but the Concept 101 would be a must have, just like the F6B. I've had more than one bike at a time, you can never have too many.
If you bought the F6B, you can't really dislike the Concept 101.
Some people here have shared their negative experiences with BMW, but I had a great run with a few R-80 / R100 bikes, one I rode for 29 years with nothing more than tires, batteries, and limited maintenance.