I have several MTH products, including about 15 diesel and steam locomotives. I am extremely pleased with all of them. Other than the occasional glitch, which I have experienced with all remote systems, including Legacy, R/C aircraft, TV remotes, and more, as well as a 5 volt PS2 board failure that was my fault due to a short when an E8 ABA derailed, the locomotives have operated flawlessly (including the used ones purchased from eBay).
I ordered several more items from the last two catalogs without hesitation, including a big splurge on a 2 rail Big Boy. Interestingly, many of these items have not been delivered and some are not even scheduled to be delivered until later this year. Businesses have purchased the G and S scale product lines. Additionally, MTH is reported to have had about $30M in revenue several years ago. Even if it has diminished to half of that in recent years, that is a big number for a relatively obscure part of model railroading. I remain optimistic that the train producing part of MTH will continue in some form, along with the DCS business.