I've been combing the online catalogs and auction sites and have decided to look for a used or old-stock semi-scale C&O 2-6-6-6. Seems like my collection is complete except for an articulated steam. Plus, I've already got a string of C&O and B&O traditional-sized hoppers to run with it. I believe K-line and MTH made versions that'll run on 31" curves. I plan to run it on my around-the-ceiling loop that's going to have 42" and 54" curves, so I'm not too worried about overhang.
Either way, I'd want factory TMCC/RS or an upgrade from conventional to TMCC/RS. How would a K-line equipped with factory TMCC/RS compare with the latest ERR TMCC/cruise/RS? Would the latest sounds be a substantial enough upgrade to make it worthwhile to look for a conventional version to have upgraded?
How about an older MTH with PS1? Any thoughts on buying one of these and having upgraded with ERR components?
Thanks