Used to have both a 2002 r6 and 2007 aprilia rsvr.
The best part of the fz6 or even fz1 is seat position. There is nothing like the feel and position of a true sport bike when you want it.
However, the other 90% of the time when you ride your bike seat position is all too important and overlooked.
Currently riding an fz6 but my next bike hopefully in the spring will be an fz1.