I have 10 MTH locos, PS-2s and 3s and a TIU that is likely 15 years old along with a handheld remote. I am running version 4.10 of the software and have not updated because my stuff is so old you need a special cable. I also have a very old TMCC system but only one Lionel loco that is more of a shelf queen than an operating loco.
What should I buy as far as MTH stuff and/or other mfgr to keep my locos running into the future?
Worried I should buy/update now as opposed to later.