Bellaire Roundhouse has the best train selection I have seen in Houston. They have HO ans N brass steamers that go for well over $1,000. It has been quite a few years since I was last there, so I couldn't say where they are now. Around mid October, go into any good train shop and get a copy of the "layout tour". They try to group them by area on various weekends. Gil Freitag's is usually on Thanksgiving weekend. His is a "must see". There is another in Pearland or Deer Park that has the most wonderful bridges, all scratch built, and all a part of a large, complex helix. I'll try to remember his name.