Well which ever one you go with you will be happy. I can only give you my experience with the kartboy. I have only heard one complaint pertaining to my first post. Most taller people said it was to short. But I am very pleased with the product. The shifter no longer looks like a ups/jeep shifter,feel is awsome going into shifts, shorter throw, and much stiffer when in gear.Oh yeah, and its much easier to churp second gear. Come on people give more votes.