Well, I gotta confess I like all the gears. I do tend to hate first with traction control on. A graceful and soft hand, it is not.
I generally run fairly quick. So its very odd for me to say this. On the 12, I rowed a bunch. On the 13 I enjoy 6 an awful lot, even short shifting to get there. Nice and quiet, stealth bomber like, and very quick. 6th allows the chassis to stay stable and I get to focus on the turns with plenty of drive toward the end of corners to stand up the bike. Now, if I'm really hustling, yeah, I'll run the gears stiffen the chassis to the max and hope I don't induce too many gyrations/bumps/jolts. This "upsetting" of the bike I find GREATLY helped by proper weighting and body position. As a believer of fast is smooth and smooth is fast, moving around the bike (loading the front, sliding off, etc) is much more rewarding than I'd expect.
Ok... back to the shadows...