I have spent time on a 4200 and a 4300, the power increase is really noticeable, you get the bigeer loader-backhoe and tires too. The 4200 is a great tractor but I had a hard time hogging with a 5 footer on the 42 but the 43 blew threw it. My father in law bought his 4200 new in '00, great mowing machine with the 60" MMM.