I have progressively gotten bigger bikes thru time but purely for the power. my 1st ride was a kawa- 250tripple. got it in 78 and wasn't allowed on it till I was 15 then in the 80's,I bought(and have been buying them myself since ) an 82yamaha TT500 which I threw on Blinkers and lights to make it Road legal.
then a kawa Z900 followed of course by a Z1R. in 88 I got me a suzuki gixxer 7-11 member them? but ended it up trading it for newer gixxer750. had that till 93 then I got my 900RR which I still got and lastly my 05-1000RR which I most definitly still have.
and as I said purely for the power never felt comfortable on any bike, they hurt like hell. frame wise or sitting position wise never pay no mind to it, I'm a physicall Rider and I pay the price. but size of engine most definitly does matter and my 1000RR has the power I'm hungry for.
I've called my CBR's 1 and 2 this way if I loose 1, I've still got 2
93CBR900RR-05CBR1000RR