It sounds like 42" is the tightest I can get and will work with most of the more modern stuff, which is probably what I will be starting with at first and sticking with Lionel/MTH. Ross switches look like they are 72" switches, but the MTH are 42" switches. Are they the only ones I should look for?
Thanks!
MTH also made 72" switches, but they are likely to have the same drawbacks as the 42". I've had decent luck with MTH switches, but Ross makes a great product as mentioned above.
I've also seen some Lionel Fastrack in standard gauge, but I don't know much about it and I suspect that availability would be a problem.
USA Track is produced by a knowledgeable, enthusiastic and dedicated standard gauge operator.
If you need to stick with 42", I'd suggest running the shorter engines and cars - avoid the Blue Comet, State Set, etc.
Also, suggest that you check out the Standard Gauge Module Association - a wealth of knowledge. Hopefully, you saw the huge layout in the Orange Hall at York.