One thing I have to ask forever27, how many acres are you covering? You guys touting VT, sure absolutely, but $$$ching!$$$ If you have the acres to justify it, sure go for it.
No doubt chopping head uses more fuel. . .but more fuel than another pass over the field with. . .whatever? And the job is done as you go. When labor is short and the snow's coming, it's nice to be done. Last fall, there wasn't much window for tillage after corn harvest, since the spring was wet and cold, corn got in late, June was wet and cool, corn didn't grow good early, everything was late maturing in the fall, and thankfully it was a great fall. Then the cold and snows came early, and I truly finished corn just in time for winter.