To the OP I'm sorry about the thread hijack and left turn.
I would say that the choice for street riding points me to bigger displacement while leaving the smaller displacement for the track. When you're out on the street, having a motor and gearing designed for lugging away from stops and nice wide gear spacing is a real pleasure. You don't have to wring out the RPM's and be tap dancing on the shifter like on a small cc sewing machine.
I spent the first 30 years of my riding on 600cc class SS bikes without ever putting a wheel on a track. Looking back now I'm not sure I would have changed that, but for everyday riding now I sure prefer my Ninja 1000 with something like 70 ft-lbs of torque available at 4000 rpm. And when stretching out for lots of miles, the FJR1300 with a big fairing, cruise control, custom seat, cruise control and a motor with gobs of torque is hard to beat.....
For out on the track, the idea of 200hp with one of the current crop of liter bikes is WAAAAYYYY more than I want to think about. My little ZX6R is just about all the motor I need - come to think of it what I really need is more guts (bravery, not inches) and more practice
I own a Triumph Tiger 1050,, did 4 track days on it.
Found a screaming deal on a Speed Triple 1050 so I made it a track bike.
What I figured out, I was spending too much time worrying about the back end coming around because of all the torque.
Most tracks don't need that kind of torque with no electronic safe guards.
This runs into another thread about reflexes, we can only process so much and eliminating this one distraction allowed me to focus on breaking my bad habits from 30+ years of riding on the street.
Are there a couple of track's I would want a liter bike yes because the straights are so long the 600's will run out of steam.
Some day if I every get to the point that I've broken all my bad habits and can then focus on just gearing and rpm around a corner a liter bike might come back into my track riding.
Since it's confirmed I'm a track addict, will state this another way.
If you like riding on the street with a motorcycle and know you could be better, if you once in a while find your exceeding the posted limits.
If you have ever experienced stuff on the road like sand or stones worse yet 4x4 pieces of lumber, mufflers and cars that don't respect your piece of the asphalt then maybe a place where the road is clean, there are no ON coming traffic, no one texting or driving under the influence and have people that can help you get better while being able to go as fast as YOU want too then the track is the place to do it.
I promise no matter your speed, if you push your riding to your limits you can't have more fun on two wheels any place else.
See you on the track with your new to you bike.
Just post up some pictures.
Will leave this thread alone since my addiction has become so apparent.
Hope to ride out in San Fran again.