I know similar post have been here before and I did a search related to this issue. Tractor is a 2009 Kubota L3400 extra power, 35.7 HP and 28.5 pto HP, HST with ag tires. Farm is in NE Missouri and the ground is pretty decent- not hard clay. I have looked at KK 60 and 72 inch tillers and the 72 is 780 lbs which is only 90 lbs heavier than the 60 inch tiller. Tire width is 58 inches, and for $500 more I can get the 72 incher. Your thoughts are appreciated.