Nothing wrong with your decision to go with MTH. I have had very good service from them. By far, my preferred method of contact is by phone, that has worked every time for me. That is true with both MTH and Lionel.
I have emailed MTH about their MTHRRC and gotten a reply. If I remember correctly the reply didn't take too long, but I can't say for sure how long it actually took as it has been a few years. I don't normally use email to contact them.
I have items from MTH, Lionel and Atlas and I think they all provide good products and service. I have contacted them all more than once by phone with very pleasing results every time. I am very happy with the service that all of these folks have provided me.
As a side note, I got back in the hobby a few years ago, also with an MTH starter set and it has grown from there. And grown quite a bit.
