When I was doing 20” rows against the 30’s on good flat black soil it was a draw but on marginal HEL land the 20” corn would blow the 30” away by 25-30 bpa. It works better the farther north in the belt you live.
Most of the large operations are playing the insurance game to guarantee a per acre income. Pay a high enough premium you put a floor on price and bushels.
Unfortunately that will be the wave of the future. Larger scope of people and many owners don’t like the mess some of the attendees leave at their site after auction over.
My dad had two of them in Delta 88 brand new and a Delta 98 he bought used. The wrist pin in the piston is what would start making the knocking sound. Ran them both over a 100,000.