f4i is more daily friendly of all the 600cc bikes you've mentioned. to make it fast, just change your sprocket -1/+2 it'll give you enough pep to keep up with r6's and 600rrs in the hills. i used to own both f4i and 600rr, my f4i is my favorite bike, cheap easy to beatup and comfortable for a 6'2" rider. if you ask me what bikes are comfortable for a tall rider id tell u to get the f4i. sit on each and you will know immediately what you like or not, bc if the seating position sucks for the 2-5 minutes ur sitting on it not moving, riding it will be 100x worst. Also for a beginner, the F4i is very very forgiving. Great stunt bike also. Ask most stunters, they'll tell u they're either still rocking a f4i or started on one.
I still own my RR but the only reason is that I've got some weird attachment to it, and refuse to post it for sale.
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