What would you recommend for a HO train set I have a Bachmann 1990's ( I am not sure ) Norfolk And Western #611 DC
...here are a few places you might like to check out- large selection of locos and/or rolling stock at these sites, some train sets too, wide range of pricing. https://www.walthers.com/ http://www.athearn.com/ http://www.athearn.com/Products/HO/#genesis https://www.katousa.com/