i got two friends with yamaha's. Ones got the r1 and the other has the r6. The r1 has crazy torque and my friends had it up to 193 on the highway but was limited because he does not have a power commander. that would be a little to much to start with.
the r6 is plenty fast and since your a beginner it will take you a while to get it to its full potential. I would stay start with an r6. it has plenty of power and it looks almost as good as an r1.