I had the Ninja for nearly four years and the Hornet for about a year.
I sold the Hornet because I needed the cash and well the Ninja...she ain't so pretty or fixable anymore.
If I buy another bike it will be a motard and probably strictly for the track. I don't know that I will ever ride on the street again. I want a fun bike for the track not a 'I have to go fast because my bike is supposed to be fast' bike.