The features I like about MRC's DCC system is that it offers both two and four digit addressing, 14-28/128 speed steps, programing on the main as well as on the program track, and offering both universal and advanced consisting. I really like the idea of having 28 accessory functions to control various lighting and sound effects.
I have established my layout to operate with two main power districts using circut breakers. There is a third circuit breaker to handle the wye portion of my layout.
Though DCC systems will technically work with just two wires attached to the track, I have used significantly more than this under my layout. I have run bus wires the length of both layout legs and dropped feeder wires from each section of track.
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