I've been debating N scale or HO for quite a while and finally decided on the HO as i like the heft and bulk of HO,as the largest area i can afford is a 4'x8' piece of plywood the rolling units of the layout will have to be on the small side,The Thomas the tank engine theme seems to fit a lot of what i,m looking for in small steam and diesel consists,so how available are all the various engines and rolling stock and has anyone done a layout with this theme? if so do you have any pics or links?... thanks