I know about KeTourneau and I'm in central Illinois....Caterpillar country.
LeTourneaus are used every where. When the lumber mill in my area used to operate(from 1945 until 1998, when the greenies caused it to be shut down and 650 jobs lost), we used LeTourneaus to haul logs from the log decks to the mills and to off load the tucks and stack the logs. Huge puppies and fun to drive.