Truth is, I believe my best switcher is one of two that I have ordered, but have not yet received and run on my layout. When I do run them (one is an MTH Proto 3 that I should receive within the next two weeks, and the other is an LC+2.0 I should receive in the Spring of 2020), then I will post comments and photos/videos of them on this thread.
I do have a good memory for things. Not wanting to be a troublemaker or rock the boat here, but when I read the above I immediately thought of another recent thread Arnold started. So to be certain, I went back to it. From that thread:
"It's great to see gigantic and spectacular layouts with model trains that are the best that money can buy, such as those that can be seen on train videos we can purchase from OGR and other model train magazines. However, if you feel, like I do, that what you have is not in that spectacular category, I have no doubt that we can still glean a tremendous amount of joy and happiness from what we already have. This is especially true if we make the best of what we have." (Bold emphasis mine)
And on that prior thread, I commented that the train hobby continues on a retail level based upon hobbiests actually not being content with what they have.
As far as this topic and the best switcher, I'd have to say it's all subjective, isn't it? There's one guy here - a MTH guy - and every time a thread on Lionel MPC comes up, has to post his story about how MPC locomotives can't pull their own shadow. I guess he ignores the many threads about MTH engines problems, sometimes right out of the box. If they don't run, then I guess you could use his same standard and say MTH engines don't pull their own shadow either.
So... in many instances, these types of questions are not only subjective based on a performance merit, but also subjective based upon individual personal opinion bias.
That all said, I'm truly content with what I have. For me, the best switcher is NOT the one that I don't have yet: The best switchers are ones I already have. With miminal alterations, they can crawl, run slowly and even steadily on tight 027 curves. Roadname issues: Ah, I just repaint them. Details? In my imagination, they're all there. And the best thing of all, besides being affordable and reilable, is that they're all scale.... precise 027 scale!