I though about that, but somtimes I feel to big for th fz6. if its the suspension, then doesnt that mean it is the bike. I'm not a professional, I'm just noticing things as I ride. I like the feel of bigger bikes. I feel like it might be time for me to promote to a 1000cc. I know i'm not Rossi, but I dont think I have to be to move up. I think a bigger bike is what I need, someting with more weight.
How can you be too big for the bike if the bike is fine when you ride 2 up?
The reason I asked for your weight is because if the bike feels stable 2up, but not when you're along, it might be that your suspension is setup too stiff for your weight.
Yes, your suspension is part of your bike, but switching bike would mean a heavy investment (+ more insurance etc...), when upgrading suspension alone would be much much cheaper.
Don't take this the wrong way, but to me, you sound like you want a liter bike, and are trying to justify it somehow
If on the other hand you just want a liter, then I suggest you go out and buy one because none of our advice will stop you
My last comment: unless you're really good, riding 2 up forces you to ride pretty slow, i.e. get on the brakes earlier, less lean, be even smoother on the throttle than normal etc... so if you cannot ride "faster" when you're alone, my assumption is that you really are not a great rider (which is fine, I am not either!)... which in turn would encourage me to tell you to stay away from liter bikes...
But again... at the end you will do what you want, so good luck with it all.

