Color DMD easily. Twilight Zone already has one of the best sound packages in pinball. Pinsound can improve the mix a bit, but no alternative sound package I've heard comes even close to sounding as good as the original.
I'd go with the LCD simply because you can customize it a lot more and it's high-res enough that you don't really see the pixels unless you get up close, so it looks pretty much the same as a standard DMD (But in color of course!).