I have the Joker kit and I love it, gives the bike a cleaner look on top. Only complaint and suggestion is depending what mirrors you run you might have interference. I have the stock 48 mirrors that mount underneath the handlebars and sometimes I can't see the needle.
In order to lift my tank, I relocated my speedometer with a DK kit. Although I liked the look of it, I didn't like looking down at the speedometer... so I flipped mine out in front of the handle bars with a kit from Drag Specialties.