im 6f4" and 108kg the 900rr fits me great even with harris race rear sets ans harris clip ons .
great bike love it . its the only bike i dont make look small when riding it

 

Im 5'7" and i had a 96' 900rr. trust me man the only thing the GSXR has over the 900 (depending on the year) is the fact that it is fuel injected. However if i was going to go with fuel injected go with a cbr 929rr or a 954rr. (may be my next bike) ha ha. you cant go wrong with a honda just remember that. either way whatever you get you best be posting some pics. ha ha. good luck and oh....check out the RC51 too. v-twin moto gp bikes. 1000cc (one of my dream bikes.) if you like grunt you cant find much more.

 

I agree the 900rr is going to pull your frame im 6'2 190 and the torque from my 95 lol scares the hell out of me sometimes..be smart get the 900rr and thank us later!!

 

i have seen BIG people on these bikes geting yanked around no problems.

myself, i'm 5/6 and like 135 wet so i fly on these things lol

 

the 900 has more power and torque than the 600, plus as it is a bigger bike you will be more comfortable on it.

Im 5' 8" about 150lbs and I still prefer my 93' 900rr to my buddies Gixxer 750.

Ride both and make your choice, but every post on here makes since to me.

Steven