I still have my C-50 in the garage. I modified it by fitting a C-90 drive train to it increasing the gear ratio 14 %. The result was a bike I would never sell even with the 75 k miles on it. It runs like a clock and gets better than 60 mpg. A great light bike for around town.
I would suggest that you plan a trip up to Americade in June. There you will be able to test ride an F6B but get there early to schedule the ride. They fill the available slots real early.
If you think you got the bug now, wait.
Check out this site for deals that can be had including deals on left over new bikes!