My approach to this test ride was from the point of view of wanting to try something a little lighter than my Hayabusa (for urban purposes) and also check out the quoted fuelling glitches that reviewers seem to dislike. This 2011 FZ1N was fine, especially from closed to small throttle openings, which is where most criticism had been quoted. No problems at all for me and also the low rpm torque characteristics also pulled strongly. It is lighter and more nimble in the urban context and filtering in tight spaces was better than the Busa. It didn't quite have the induction ROAR of the Busa but otherwise the instantaneous throttle response was impressive. Clutch (non slipper) action was very smooth & light and the brakes flawless. I liked the looks(I preferred the black) of the N far more than the S. One thing I did not like was the position of the footpegs. They dug into the back of my calves at standstill in the traffic forcing me to sit far forward. Rearset's a must for me on this bike... The engine was very impressive indeed. I'd say if you want a naked this is near if not at the top of the heap. The 6 speed GB was not as smooth as the Busa, but possibly due to newness and also there is no gear indicator, which is a bit of a let down by Yamaha. Build quality was exemplary and 4-1 exhaust sounded very good if a slightly on the quiet & cultured side. An Akra 4-1 system would fix that! This bike is nimble, very likeable, great looking & very powerful as well. On the road you would not notice the 0.5-1 sec giveaway to the mighty Busa in the 1/4 and 0-100kph dash. In the 250kph+ region, of course the Busa is pure Serenity without equal that I can see. With the FZ1, you gain lightness, but you also gain wind buffeting. You also LOSE around 45kg for the urban blast, so the FZ1 is fantastic, but away from the city traffic, the Busa Supremacy is still right up there.