Although of most interest to people modelling European outline, I recently setup my Ecos to control one of the Marklin Systems Digital Colour Light Signals.
These are quite expensive, at current exchange rates somewhere around 50 to 60 GBP, but they are totally amazing, the lights fade on and off from one colour to another. My particular signal has four possible settings, and I found that the Ecos comes pre-programmed with most of the different signal types, so I picked the icon that matched my signal and that was it.
Now, when you tap the icon of the signal it presents you with 4 pictures of the signal with each of it's possible settigs. You then simply tap which one you want and the signal changes. Brilliant, I played with it for ages. Just wish I could affford more of these signals. There are no wires going up the signal post or on the back of the signal heads. The technology is fantastic.
Although they are of course Motorola format, the Ecos gives you the option of selecting Motorola or DCC for each accessory.
I believe that Viessman (who make these signals fo Marklin) are working on DCC versions, they may already be available.
To summarise, I have used Roco, ZTC, Hornby, Bachmann, and ESU. The Ecos is by far the easiest system to setup, and the most pleasurable to use. For each point type, the Ecos offers you a similar range of icns so that you can see exactly which way you ae setting each point. It is interesting to see that the Viessman Commander System is taking this a stage further by offering a full layout diagram.
I think it is going to be interesting in the future to see if Digital systems become more like PC control software programs like RailRod & Co. or whether people prefer a simpler approach, which can then be linked to a PC if required.
Regards
Ashley