I don't know for sure but would say Europe is the biggest market. That is because they seem to be designed for our heavy damp straw. Very one and their dog seemed to have a TX36 when they were in Vogue.
In my area there is only one farmer who owns a TX machine and it is a TX68. There are also a few TR98. There are very few new NH machines in our area but there are alot more of the TR86, TR85, TR75.
HERE IN THE UK WE RUN TX COMBINES AND THEY PERFORM VERY WEll.THEY PROVE TO BE VERY RElIABlE AND THE WORK RATES ARE GOOD.JUST WAIT UNTIll 2002 WHEN THEY lAUNCH THE NEW TX FROM WHAT WE HAVE HEARD IT SOUNDS SOME MACHINE .