I just received my MTH Railing Dreyfus Hudson from a seller on Ebay. I'm quite impressed with it. I placed it on my test track and powered it up last night. It's #RK-1113LP. I have yet to go through the manual completely before I run it on my temporary layout. But as I said, I am pleased with what I have seen so far.
As a side note, someone has a five car set of Williams New York Central heavyweights, for sale on Ebay. I think they would look nice behind the Hudson. I haven't seen the streamlined version yet, but I'll keep looking.