By being cheaper than the others, doesn't actually mean that the tractor is built cheap. For instance, with Branson (the brand I have experience with), the tractor has a lot of quality. It's built heavier and stronger than probably any other brand. The castings are huge, the tractor is welt built and you actually get a real hood and fenders made of metal instead of cheap flimsy plastic. You can see quality that you can't see in some other brands.
People are a bit skeptical about this brand, probably due to misinformation and mostly by the under-advertising it gets by the brand. But if you can actually sit in a Branson tractor, you will see what I mean, specially if you have any other brand on the side to compare. And I'm sure the Branson users can relate to this.
The John Deere power reverser series, I believe the 6M and 6R series, are built by Branson. Same for the McCormick X1 series, which are actually a clone from the Branson 20/25 series.