Does anyone remember Hornby,s Zero 1? So far ahead of it's time, it made the Enterprise look ancient. I really fancied one, but then I saw the cost of it, and then the extra cost of each chip you needed for the engines, and it put me off for life. I think that's probably the main reason I've kept clear of DCC, obviously that is stinginess on my part, nothing to do with any other pros/cons