not sure where to put this, but here is as good as any..... i am currently working on an HO setup. my dad has O scale we used to setup as kids and now he wants to get it back out for the grandkids. and i am starting to think of a new setup in N for my basement in a smaller area..... so the question is.... do many people model in multiple scales? or just stick with one? just curious. any opinions welcome. thanks!