I am in the market for a 50-99 hp tractor and I think I'm liking the International models like maybe the 666, 756, or an 806. I was wondering about some points I'm reading about in the adds like Torque Amplifiers, dual remotes, quick hitches, and the difference (advantages/disadvantages) of a hydrostatic tranny vs non hydrostatic. I'm an amateur for bigger units like these and it won't be used full time. Mainly hay making 3x year, manure spreading 2x month, and brush hogging are my aim.

Can any of you International fans tell me from this era and these type models what the ideal set up (I prefer gasoline engines) for the uses listed would be and if I should avoid certain things?