All of these responses have been interesting. However, based on what's been posted, one could make the assumption that there is no such thing as a bad tractor, as such, but rather that tractor quality is relative to any given owner's or operator's experience of any particular tractor. Given the opinionated posts regarding tractor brands that I've read on the board--that go beyond the simple brand loyalty that Cerberus points out--I find it hard to believe that most people do not have more specific opinions regarding tractor quality.
For example, I read a post in which somebody argued that the heavier weight of a Mahindra is not a positive feature as what the heavier weight really reflects is the manufacturers need to use more steel because the steel used is of poor quality. Further, it seems that many people hold the opinion that gray market tractors are not good tractors, and not only because of a lack of dealer support and parts availability.
If all tractors are potentially good tractors (depending upon the experience of any given operator/owner) then why do so many people spend more money to buy one of the big three? Is it only dealer support and parts availability? If dealer support and parts availability were equal across the board, would most people consider the Big Three, Mahindra, Case, Agco-Allis, Massey Ferguson, Kioti, McCormick, Century-Branson, etc. equally potentially good tractors? If not, why not?
Since my original post did not generate as much interest as I expected, I realize that I may be pushing people's patience with this follow-up, but I am very curious about this.