What kind of range / mileage are you getting, and how much gas do you get in the tank (how usable is the capacity, I never get more than 4.5 gal in our 5.5 gal R1150R tank).
The smaller tank size was a big negative at first, I am wondering how its turning out.
The R1200R and R1200ST share the same engine. I consistantly get 47 to 49 MPG the way I drive, look for a statinn at about 200 miles, the most gas that I have put in my ST tank is 5.2 gallons, have never run it dry.