Unfortunately the 350K per year you save with the lower investment in the 600 versus the 601 pays for a lot of MSP and slight increase in maintenance cost. Resale not much of an issue with the current purchase price on the 600. It looks like a good option for a low flight hour user who wants a large cabin, Stage 3 and reasonable fuel efficiency. Would still like any feedback on actual experience with regard to fuel burn East Coast to LA. Thanks