Well, I only have one Con-Cor model, their HO original Burlington Zephyr (with the added car), but I've got to admit it's a little honey of an articulated train. I was going to get their UP M-10,000 (plus the extra sleeper) just for kicks, but it got sold out WAY before I could get my LHS to order it in. However, my Zephyr has gotten quite a bit of mileage on my Yuba River Sub as a Sacramento/Reno/Carson City daylight all-coach "Capitol Limited" (don't laugh, OK?). Nifty little train, runs smooth as silk. Tom