I went from a Farmall 450 diesel to a 460 diesel.  What a disappointment.  Poor torque compared to the 450.  It seemed like it needed a head gasket every 18 months or so.  I used it on a loader and ground feed with it.  One good thing about it is that it didn't have a TA.  The 60 series has the most expensive TA of them all.  I certainly didn't cry when mine left the farm.