Owen,
You're right about the board favoring Kubota. This board in a previous life was a Kubota only board. Remember, this board is predominately compact tractors, I don't know if 45-60 hp fits in this definition.
I own New Holland...keep in mind that it is part of CNH (case new holland) and IT is the world's largest manufacturer of agricultural equipment! From deductive reasoning, one could conclude that they sell more tractors than anyone else. However, I don't know where one would get ahold of the numbers.
Good Luck, and always keep in mind how the tractor fits you, your needs, the dealer, dealer location to you, etc. no matter what color you're looking at.
JimBinMI
We boys and our toys!