It needs to be reliable.  I remember when 4440's were new, you brought one home, maybe had a factory flaw or two fixed under warranty and ran it for 8000 hours with only oil and filter changes.  The new tractors always seem to have this or that glich needing to be reprogrammed, or other problem, some major needing attention.  Again, they need to be reliable.

And,,,,, to the other color mfg's, this applies to you too!