I've just spent three hours failing to get one pair of point motors to work. They work fine off the layout, the points work fine without the motors, but once the motors are on the points they simply will not move, despite careful measurement and any amount of adjustment.
Part of it is, of course, using Peco motors, which are shit, but I can't justify paying the huge cost of using better motors. Or at least I couldn't, if this experience is anything to go by I will be able to justify gold plated motors with diamond encrusted labels just on the basis of saving my sanity.
Guy