No right answer, as others have said. Two doors reduce the feeling of claustrophobia but, that said, I was incredibly impressed at the integrity of the passenger capsule in a PA24 which had a CFIT accident. It was pretty clear that at least some of the strength came from the singe-door design choice. Still, my personal inclination leans to the easy-exit (2 door) arrangement.
My present Sunday afternoon machine is a little Tecnam P2002JF, with a sliding canopy (like the Grummans). It was deliberately chosen for the roll-bar arrangement (and impressive crush-test video) but I admit to being sceptical about the little hammer clipped to the hat shelf. It might just about be possible to reach the hammer, break the perspex and exit the aeroplane in an orderly fashion. Then again.....
Last edited by tecman; 14th Jun 2013 at 13:15.