When I'm running my trains I enjoy the sounds of the engine, the sounds of rolling stock wheels on rails, the smooth speed control, the detail I can admire and the big easy to see size. The last thing I look at is the number of rails on the track.
With 3 rail you have a dedicated center hot rail and TWO return rails. I could be wrong but I would think that makes for more reliable performance than 2 rail because you have more electrical contact area to work with.
