I just bought my R6s two weeks ago. I had a Katana 600 a year and a half ago and I am just getting back into riding. Even though both are 600cc there is really not much of a comparison. The R6 has a much more responsive throttle that can take you by surprise about how fast it picks up speed; thought I was doing 35mph and I saw that the speedometer read 62. After you break the bike in, which I have not completely done yet, you can do all your riding without passing 2nd gear- it has endless power. The brakes are extremely responsive and the transmission is smooth. My only real complaint is that the idle speed is a little too low (which one other person here said). You need to stay in the friction zone a little longer than you might think. The power and speed always puts a smile on my face and leaves me screaming inside my helmet about how "awesome this ride is!" It is not a great bike for a brand new beginner though. Learn on a less powerful 600 or lower cc.
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