I think bmw will push the twins in the gs direction singles for dirt and in town. The 650 twin is an entry level bike designed for 90% road use. The 800 ups the anty with more power and a much better suspention for off road use. You gotta have skills to use the 800 as designed. If you new to riding the 650 is for you. Parts for all bikes will be available somewhere so don't worry about the little s---.