I have a friend of mine who is interested in getting into N scale as something to do with his 12 year old son. He wants to find a good starter set to mess with first to see if it's something the boy will actually be interested in besides Grand Theft Auto on the playstation. He figures they can do a small, quick layout of some type with the starter set and if that works they can move on to grander things with thier empty basement. So what are some good suggestions to start with? Are steam or diesel sets better? He mentioned the Little Joe by LifeLike or the Bachmann Yard Boss but I've heard those aren't really to great?