Personally I like grunt in the low end. I do alot of stop and go city riding. I would imagine the powerband choice is one that depends on where you ride and how you ride. Conversely, the 919 is not that great for highway stretches, but still fun... But admittedly I do dream of a fairing when I am at the 15 mile mark on the freeway.
I like the postitioning on the FZ, but that is all I have done is sit on it.