Welcome aboard Charles. I model in O scale aswell and am aiming to use all the smaller gauges within O gauge, including 16.5mm to represent 2ft gauge. Everytime I see one of those kits I am in conflict. Part of me is saying 'Go on, buy it, you know you want it!' but the other part of me is saying 'No, come on now Mr Sensible. You know you've got too many other kits sitting in their boxes untouched'. At the moment Mr Bloomin' Sensible is winning. Yes, battery power is so much better. Constant power, no wiring, no cleaning. I wish you some fun times with it and I believe the Protocab system has good potential for future development if it is supported enough. I look forward to some photos sometime perhaps.