This is the review of the twin, not the single. This is a great all around bike, very smooth on the highway at speed and nimble around twisties. It´s not a hard-core off-roader at 450 pounds, but it can do light off-road. The fuel economy is great at 60-70 mpg depending on driving habits, and it takes regular. Add the optional luggage and it is a mid-weight adventure bike.
I haven´t had it long enough to gauge the cost factor; I assume that since it´s a BMW it won´t be cheap.