The CBR 900RR is an awsome bike! I just bought one about a 3 months ago and have been loving every minute of it! To me it basically felt like a beefed up torquier version of 600. The way i look at it is if u have owned or ridden one of the 600 or 750 sport four´s adjusting to the 900rr shouldn´t be much of a problem. The only concearn should be letting yourslef adjust to 900RR´s torque and unusual power band. It is a little underpowered as compared to the YZF-R1 and ZX-9R but will have absoutly have no prob holding its own aginst these 2 bikes. A quick twist of the wrist in first will send u wheeling through the gears down the road. U should make sure your comfortable and experienced before pushing this bike to hard, otherwise u may get a nasty surprise. The suspension is great but the steering can sometimes be a bit twichy, which is nothing too serious but something u should keep an eye on. Thats basically my OPINION on the CBR 900RR. So...Should u but the 900RR??.... absoutly!! Motorcycle.com CBR900RR Review.. http://www.motorcycle.com/mo/mchonda/98rrintro.html