Ok I know what you want, I test rode a FZ8, its awesome, no question about it, but the FZ1 is crazy.
When I got off the 8, and took the fz1 for a spin, I knew which one I wanted.
The fz8 is A LOT more comfortable. its smooth, great quality.
If I'd have to grade it, I'd give it an 8. The FZ6 is a 7,5 (talking about a stock bike).
The FZ1 comfortwise is a 6,5-7. It felt a lot less comfortable, kinda when you sat on a nice big sofa, and switch to a wooden chair.
But the power
omfg the fz1 is just crazy.
I rode a bmw S1000RR, which has a lot more bhp, but the torque is almost the same. On the fz1 I felt like a insane idiot going WHEEEEEEEEEEEEEEEEEEEEE.
bmw not so much.
So if you decide to upgrade, try the fz1 first