I would choose KK because of height and speed, along with (In my opinion) better theming (can you believe Six Flags themed something well
), and the second hill. Plus, the launch is a complete surprise as there is no lights to tell you. TTD because of lapbars, smoother, and a much better view. Overall though, props to Six Flags for Kingda Ka. I really can feel the extra height and the airtime on the second hill. It's just bigger and meaner than TTD. In a year or 2 though, we'll be comparing both of them to Port Adventura's strata/giga