No there is no Consumer Reports for tractors.
However, there are over 4,000,000 threads in the TBN archive which you can access. You have found the Chinese Tractor forum, lots of info there.
It seems to me from years of reading T-B-N that people in the US who buy Chinese tractors end up frustrated, in tears and with a tractor that does not move. Manuals in Pidgin English and no parts. No mechanic wants anything to do with them.
In parts of New Mexico there is the added complication of high altitudes.
As you know, high altitudes can easily be compensated for with governor and timing adjustments. This is true with all diesel engines.
In Australia, much closer to China and a major trade partner with China, Chinese tractors seem to have a small base and SOME BRANDS seem satisfactory.
INTERESTING LINK:
http://www.tractorbynet.com/forums/...defunct-tractor-manufacturers.html?highlight=