I have installed and driven all three of them. Here is my breakdown of them and this is my opinion. The kartboy is the shortest height-wise, the TWM is the shortest throw distance, and B&M is the hardest to install and the tallest. what's missing in the picture that somebody threw up there to compare them is that is the first generation TWM, now they use a ball bearing bushing that is really kick ass. Here is my set up and other local pro owners love the way my car feels. I have the TWM shifter with the ball bearing bushings, bronze oil bushings on the front, and Kartboy polyurathane bushings, and TWM weighted knob. what I got out of it was a real short, firm, positive shift. Honestly one of my favorite mods.