Excellent!, nice & retro i like it.
Never rode one but i reckon 400 is the perfect size really, fast enough even if you gotta wring its neck
Its all a bit too easy, even on the 600 to reach dodgy speeds & being light & nimble must give it a fighting chance on UK roads.
Considering how much traffic we deal with these days id say 55mph to 90mph is the most important for a bike, early days but how does it feel in this range so far???