Just some initial thoughts on my newly acquired Stihl BR600. Moves more air than it seems due to the different sound than a straight 2 stoker. Maybe I got lucky, but it starts on the first pull when cold (primer bulb and full choke). Pleasantly surprised so far. I'm starting to believe in this thing. Maybe these newer motors are the wave of the future similar to what 4 strokes have done to motocross, supercross, X-Games, etc.