I'm looking for advise with regards to the Bachmann class 170 I have been thinking of buying one for ages but with all the negative things I have herd about them I don't know if to just go out and get a Bachmann class 150 as I do have a later type of class 150 now and I have no problems with it but I only have the money for one I have already pre ordered a class 171 from them although I could be waiting until the end of time to get it. advise greatly received