Hi, GregBob here on Tuf's computer.
As one of those "I have both" people, there is one major problem with any sportbike: I think they are really boring to ride on the street unless you are travelling at felony speeds. As my speeding tickets began to pile up, I turned to the track for speed. The gsxr requires way less physical effort and gets around a lot faster, but the busa is still really fun.
For fun on the street, it's GOLDWING all the way. I can U turn my wing in the WIDTH of two parking stalls (ie 14'ish feet) at about 1 mph. It handles great, huge comfort, tubine smooth engine with good power, storage space for groceries or trips, wind protection for comfy riding on cold days, and it is still a challenge on the street at reasonable speeds. And parking lot drills (dragging engine guards) are a blast and will attract people who share the obsession.
Also perfect for two up; my ex used to actually fall asleep. It also has an intercom, stereo, and, and, and. Cupholder is optional.
Plus, Wing people are the nicest in the world.
http://i456.photobucket.com/albums/qq289/GregBob_photos/wingturn1.jpg
http://i456.photobucket.com/albums/qq289/GregBob_photos/wingturn2.jpg
http://i456.photobucket.com/albums/qq289/GregBob_photos/wingturn3.jpg