The biggest problem with the 4220 is the vario box.. at say climbing a hill well loaded you are at 20k, you will be about 50% hydrostatic input. That really saps the power, nothing wrong with the sisu.. it’s a beast on pto work, running most kit in eco no bother. My pals case cvx has 3 or 4 mechanical shifts between the vario and eats the 4220 on hills. I think the zf box would have been a better choice for a road oriented tractor. The higher final drive ratio on the 4220 over a 724 will kill it a bit more too, as if both are doing the same forward speed the 42 will be running more hydro and therefore more power losses. The lack of a powershift into the low ratio is really stupid and dangerous as the tractor can stop driving completely on steep hills with a decent load. You have to stop to engage low box with cars behind you then stop again for high! The vario works great for field work like baling, mowing and most jobs, no clutches wearing on direction changes. Unlike the zf. The ride comfort is fantastic and roading handling is good but a little more wandering with the 70 profile tyres over the 65’s. You really need the wider tyres tho as I don’t care what anybody says, they will struggle sooner in bad conditions. Wheel diameter is critical for maximum traction, especially if the back end is heavily loaded. So far our 42 has done well tho, just have to accept it’s a bit slow on the hills.