QUOTE Which would I buy? Viesmann.
Why? Lights, Track Control Decoders, Special Effects, Catenary, Signals, Central Station and Control Panel. I saw an entire layout under Viesmann control and it had more bells and whistles than I can remember. These should all work well with the Ecos too. At least they better,
I have just ordered Viessmann occupancy detectors to go with my system. The Ecos manual says that Viessmann electronic equipment was tested with it as well as Maerklin and LDT.
While Veissmann has a great current set of digital accessories (probably the best), ESU is currently developing and creating new ones so there is a lot planned in terms of expansion. New items were announced this week like the power boosters and switch pilot accessory decoders. There is plenty more to come.
Also ESU are one of the worlds biggest manufacturers of decoders. Viessman don't make decoders.
Both systems can be updated via a computer connected to the web for updates when neccessary.
Another consideration is what are your needs. Digitrax has a very good walk about controller. ESU has a mobile controller too.
It's unfortunate but you will have to trawl through a lot of manuals and the such to find what best suits your individual needs.
However hopefully we have shortened down the amount of manuals for you to look at.