Hi Bruce: yeah, I'm still herel I don't think that I'm going to order any of the new GGD Milw Rd cars because I really own well over 60 pass cars, now. i was under the impression that the GGD cars were all heavyweight cars, and from what I've seen, they really are excellent. My problem is that my heavyweight pass cars are from all the regular suppliers, MTH, Lionel, K-Line and Williams, and are all 17"cars. Realize that they would not be actual scale length, having made that commitment already, plus the fact that my RR does incorporate some pretty tight curves of about 66" in diameter, I just can't see adding or changing everything now.
I do have quite a number of 21" streamlined cars, including those from K-Line, and they do look nice stretched out into a long train. I fo wish Scott Mann well with whatever Milwaukee Rd cars he does produce. Morning Sun books have the best, general discussion about Milw pass cars. Of course, one problem for modelers is that the Milw had four distinctive styles of cars, all lightweight design, generally referred to by their introduction years: 1935, the original flat sided cars, 1936, the first cars with two ribs, 1939 with seven ribs plus a short run in 1942 with five, and then the post war, Brooks Stevens designed smooth side cars from about 1948. You can really develop a huge fleet of passenger cars, trying to build trains using all of these designs! Weaver, as you may know, did offer cars and sets of cars in 21" length in all of the pre-war car styles. I have some from each.