Just had my bike stolen - TE610 and the insurance claim should be coming in a week. Rode the 450 and found it much lighter and easier to ride than the 610 but not as much torque (for obvious reason). My main concern with the BMW is the exposed engine. Around here we ride in the mountains and tend to smash rocks on a regular basis. The skid plates over the frame protects things well on the TE but it looks as though the BMW would lose half the block if rocks were hit. Any ideas how the performance would be vs a TE510?