I have been mowing a five acre field with a MF135 and a 6ft finish mower, takes me between 3 and 3.5 hours. It started out as a field I was just brush hogging a few times a year to one that is now a pretty nice looking lawn. I see the professionals are all using the zero turns and I was wondering how much time that would shave off my 3 hour mowing? The nice thing about the tractor is that you do not feel any bumps, pretty smooth ride. I have a zero turn (no suspension) to use around my house and every little bump just about knocks you out of the seat so I am mowing much slower than it technically can mow at. The six foot finish mower seems like a nice fit for my MF135, not sure if it could handle a larger mower. So what do you think? Would a zero turn with a suspension mow a somewhat bumpy 5 acre field faster than my tractor?