The one big hang-up I had about buying a DCC system was that I have very few decoder-equipped engines. Most of my fleet will however accept drop in decoders, but those cost money and conversion would be a long slog. In addition I do have a lot of older engines that like to run. What I wanted was a dual-mode system of sorts. A more powerful power supply that would give me walk-around control and allow me to run both DC and DCC engines. And that's when I discovered the MRC Tech 6 system.
This system is exactly what I wanted.I can switch between functioning as a regular DC power pack or a full-out DCC system. It also comes with a 6-amp power supply, which should allow me to run multiple long trains headed by multiple locomotives on the same loop without breaking a sweat.
Now, the Tech 4 hasn't been retired just yet. See, in DC mode, the Tech 6 functions only as one cab. I need the the Tech 4 for the other. That said, with it only running one loop instead of two, the Tech 4 should work better. However, I gather as I start equipping my fleet with decoders, it will be getting less and less use.