I would bet money that the motion-sensor toilets are not cost effective in the long run. I have seen way too many of them in some kind of malfunctioning or non-functioning state, and I don't think just any random plumber can work on them until/unless they learn specific manufacturing details, which involve electronics and sensors (not your typical plumber stuff).

I would never spec these in new construction unless they were the kind with a purely mechanical flusher incorporated as a failsafe.