I am in now way am one to judge, but if you want to compare the two on lever placement, the 806 and 4020 for that matter.  You would have to be on drugs to think the random placement of levers on an IH 806 has any rhyme or reasoning to it.  Lets see here, PTO lever behind the seat, throttle up in front of the steering wheel, TA on the left console, hydraulic lever down literally on the right floor, two shift levers that requires the finess of an 18 wheeler driver to get in gear, and lets not forget the park brake lever down between your legs.  I have to believe this is a tractor fit for an octupus!