I had a couple of Suzuki T20's - the original X-6 Hustler. What a blast. I raced one for a year and managed a 1st, a 2nd and a couple of 4ths. It was also fun racing harleys and stuff on the street. They never expected a little smoke generator to be so fast (up to 60 mph at least).
It was the first bike I ever had that would do stoppies.
I did my road test on my race bike - complete with noisy expansion chambers and no kickstarter. The examiner was a little confused with me having to bump start the bike.