I have the Trackman 2000. I have nothing to compare it to so all I can do is relay my happiness, or lack of, with the cleaning car.
It's OK is the best thing that I can say. Not great, not bad.
One "tip" that I discovered on my own, and one that I mentioned to Henry (or was it Hank?) is to put a boxcar behind the Trackman. Without the trailing car I found that the pad would not recenter coming out of a curve. Worse, while going around the curve the outer part of the pad wouldn't touch the outer rail. Dragging a car behind cures both.
Based on a forumite's comment this past December about the Trackman, I tried what he does but am on the fence. He puts Denatured on the pad before dragging it around. When I tried I found that the track still needed a "dry" cleaning - if I ran a rag over the track it picked up all of the gunk that the Denatured loosened but left behind.
What else I learned on my own is to clean the pad often. Just take paper towels or a rag and rub the black stuff off. Since the same part of the pad touches the rail all of the time, all of the black stuff is concentrated in just 3 paths on the pad. The rest of the pad is perfectly clean.
- walt