Hey, friends my name is Nibaldo Soto from Chile South America, i'm recently entering this railroad modeling world and I'm very exciting about, actually I have bought a diesel locomotive EMD FT-A from BACHMANN and 14 days ago I bought a BACHMANN SPECTRUM Heavyweight B&O passengers set (4 pieces) and about this is my question.

What's the differences between Bachmann products and Bachmann Spectrum products ?

Thanks a lot for your answers !!!!