Hello all! Im brand new to g scale. I have been doing Ho dcc for a couple of years now, and I want to branch out into G. I have plenty of room, over an acre, to build on. I have been seeing good things about bachmann big haulers, and I think I'd like a used 4-6-0. How do I tell a new, all metal gear one from eariler plastic gear ones. Also, does this website have classifieds? Who is the best source for track? Thanks all! Doug