The first - I got into this a little to late. My entry into the S gauge world started pretty much in 2008 and it was with Flyonel. By the time I got a few S Helper reefers in 2010 or 2011ish S Helper was having the "issues" with China. I have over the years found some of the nice cars I have been looking for, but will never have the selection to choose from I would have had had I rekindled my intrest in trains 5 years earlier.
Second, S helper (and now I assume MTH) s traxs blows Lionel's s gauge fast track out of the water. I have a decent amount of the lionel stuff to throw up on a table to run legacy engines with. The s helper detail is so nice and the way it fastens together seems to be a little sturdier to me. This experience has made me seriously think about selling the Lionel track and looking for good prices on the MTH track.
Both of course need to get the switches out there.
In short - I am really impressed with a product I pretty much missed out on.
Ben