looking at buying a kubota 9540 4x4 how reliable is this tractor i usually put 6 to 800 hours a year on them all thru the summer months run 6 to 7 days a week 10 to 12 hours a day . dealer is really pushing a mahindra 8560 but i kinda skiddish but has me thinking about it is the 9540 comparable to the old m8030 in any ways?