i have had a 2003 t100, 2006 scrambler, 2009 bonnie and now have the speedmaster.
the 03 was nice but the suspension was just slightly stiffer than a hard tail. after new shocks and a few other bits it was ok.
scrambler was fun but the pipe was always in the way, and it's a little taller.
the standard bonnie with the cast wheels was a nice bike that handled the twisties very good..
the speedy handles well and is comfy for long rides since i changed the seat and the rear shocks.
for bonnie stuff look to:
http://forums.delphiforums.com/New_Bonneville/?