DC or DCC, if your thinking signals, your going to break the track into blocks, and really good trackwork requires solid wiring underneath, DC or DCC. To me it doesnt make any differrence. Just one you may have toggle/rotary switches on the side panel, the other not. Then again, like me for realistic turnout control, or like a yard panel for turnouts with switches/buttons, it makes no difference, your going in with the soldering iron. My first DCC engine was the BLI Class A 2-6-6-4 with DCC, first run paragon, I didnt own DCC yet. Eventually I bought the EZ Command just to see this engine perform. It was pre-MTH lawsuit QSI, sounded great. Eventually I bought the digitrax super chief with radio. My purpose for the Digitrax was signalling. I knew there were 3rd person vendors doing neat stuff for signalling and dispatcher panels etc, so I went that way. My EZ command is used for testing purposes only off railroad. Its a nice introduction to DCC, usually if you own one and want an engine with different address you took it to your "expert" hobbyshop and changed it, usually free. I would buy a better DCC system because it will be practically a one time purchase, like your favorite brass engine if you do that. Eventually you may want some side tracks or engine tracks to kill power to locomotives on them for various reasons, I know I would on a roundhouse, all them engines powered up....just put it into your buying plans.