Recently installed under my US layout is a Lenz LZV100 DCC command station, to replace the older LZ100 and LV101 combination after many years of trouble-free service.
The old two box combination (a bit like a pre-amplifier and power amplifier in the world of hi-fi separates) was superceded by the single box solution last time Lenz upgraded the hardware. I didn't feel the need to trade up at the time as the system didn't do anything my older boxes didn't, apart from supporting bi-directional communication - something I didn't need until now.
The new box went in with ease, just reconnecting the half-dozen or so wires from the outgoing kit had me up and running in a couple of minutes. Everything worked as before (a bit of an anti-climax when you've just spent money!) but I now have the ability to start fiddling with bi-directional communication, or Railcom as Lenz call it.
The older boxes will be used to power other things, so aren't for sale!
Currently On My Stereo: Pink Floyd - A Momentary Lapse Of Reason