http://cyclenews.com/articles/off-road/2012/09/26/first-ride-2013-yamaha-yz450f/ I think this article touches on the unique handling characteristics of the YZ450 without getting into the typical moto journalism cliches or misunderstandings. The key is where they discuss the RPM vs. stability. My take is the position (closer to CG) of the cams allows for really good feel and manueverability at lower RPM. At higher RPM they say the bike gets "twitchy". Given my experience with the bike I think that's probably a fair statement. But I think a better way to say it would be that other bikes with conventional cam placement actually gain stability due to the gyroscopic force of the cams as RPM increase, whereas the YZ does not. It stays loose and flickable. This may be one reason why some pros may not favor the bike...Compared to bikes with traditional (forward) cam placement the Yamaha is not as stable at the high revs where pro's live. The good news is, in my world it works REALLY good.