I have to say that I am a bit of a Steam Tram and Regner nut. I have a Willi that runs superb. I also have a Berta which is a Mannheim Steam Tram. I have NEVER run this as it is just too pretty and I do not wish to soil it. I expect the RC batteries in it will be trashed by now, as I have had it for some 8 or 9 years now.
I have been trying to avoid buying the Otto ever since it was introduced. Wether I will manage t avoid the temptation remains to be seen.
JonD