The 3mm society says "OO too big? N too small?" but does anybody have an image showing the difference?
I ask because I'm looking to start building a layout from scratch and so I was thinking as 3mm seemingly has most going for it on this side versus 2mm, which I have been leaning towards, but as I am restricted in size due to living conditions is 3mm still too big? I would be grateful if somebody could provide an image of an engine in 3mm against 2mm as I haven't yet found anything online.
My layout will be based around a simple loop initially as I want something to provide for my youngest to run a train around to start with and if they lose interest I can build up for myself after.