DCC for sure. I never had any trouble wiring blocks for DC, even for large layouts. But why do so if you don't have to? OK, sure if you can't afford it it isn't an option. And if you'll only run one loco at a time, a lot of the advantages are gone, tho not all. DCC is not complicated, tho it can be. I'm a computer dummy, with little desire to learn. I bought the Digitrax chief about 4 or 5 years ago. Yes, I was nervous about my ability to get it in operation. I read the manual before buying. When it came, I also ordered one loco with a decoder installed so I could check the system right away. I connected the unit (2 minutes) put an analog loco on the track, powered up (heard that hum!) and ran, no problem. Put the DCC loco on, selected it's address, and it ran. Turned out installing decoders was easy, in most cases. Finding room is the only potential problem. Basic programming is a snap. If I can do it, anyone can, believe me. Remapping functions and other "advanced options are just that, options. I don't mess with them and it hasn't lessened my enjoyment. I select an adress and run, can turn lights on and off, use sounds, etc. Piece of cake. I have a large railroad, the fact I didn't have to block wire it as extensively as I would have with DC, and the fact that I don't have to screw around with block selectors are the best reasons to go DCC, for me anyway. I'll never look back.