Let's talk reliability, ability to get the plane worked on anywhere, non stop anywhere? Speed, let's assume .85 or better..don't want to be limited to 41 and below? .and how about cost? Let's say $15 mil vs 50 mil for new....as far as I am concerned, you really can't beat a used GIV for the money and what it does. Guaranteed you put me in one of those..no one is going to beat me anywhere, no one can get a better ride, or a better landing, no one is going to bitch about the cabin size or the fuel burn.