I'm a fan of the Shibaura Fords / NH. I've owned several, my brother has two of them, Dad has one. From 1979 to mid-2000 models. No issues with reliability on any of them. They are well designed for easy maintenance and operation. 700 hours is nothing for the 1720. The xx20 series Ford / NH tractors were built in the transition period between Ford and NH. They are built heavy - like the Fords, but quiet and refined like later tractors. Perfect attribute mix for a great tractor. If it is the factory branded loader and all sheetmetal is good with no rust or other problems, I would try to make the best deal I could make and then take it home. With proper care, that machine will be operated by your grandchildren someday. Good luck.