gday mate and welcome to the site.
BOth bikes are great but I do know many people that have ridden both all say they prefer the space and comfort of the R3. Also, the rocket does give you that giddy grin everytime you take her for a spin. If you are considering a lot of 2 up riding the touring is a great bike and compares well with the tbird.
One thing to point out, several people I know have sold the Tbird after a while as they werent 100% convinced it was for them. SOme upgraded to a rocket others went a dressed HD.
As far as k's go, if it is stock i dont think it matters. If it is tweeked or worked, check who did the work and you'll know what you are getting.
I know there is a rippa r3 in canberra up for grabs speak to
@CanberraR3 , it is his personal bike. Alternately he'll get you a deal on a tbird if thats the path you chose.
Good luck and let us know if there is anything we can answer for you.