They're all pretty much the same IMO. Since HT fixed the fuel leak thing, they're about as rugged as they should be. In one run I've taken down the ord at three separate bases making no less than 5 passes to do so. Still had enough parts left to down three enemy planes after the 5th pass. D-40 is the machine to do it with. N can carry the same load but is a turd when the WEP runs out.