I have a tdx 3, I don't like it much. It feels strong and well built, but it does not have the new steering electronics. So when driving straight, it veers to one side. Then to adjust it back, it jerks over. No smooth turning. You can't just glide side to side. You jerk left, then jerk right. Greg
I have a tdx 5. I love this chair. handles great, gearlessbrushless motors are sooooo smooth and the truetrack keep it going straight.
