The X cockpit is not very comfortable. Could possibly be the worst for an aircraft with its endurance. Shoulder room doesn't seem to be the problem, it's trying to find something to do with your legs. The center pedelstal is wide so you can't really spead your legs on long trips (a real bummer if you're flying with a chick.....just kidding). I know a lot of larger aircraft have foot "pegs" to prop your legs up. No such luck in the ten. If you're in the left seat there is a small space to prop your left leg up but be careful, don't knock the pass ox switch, they're a pain to re-stow. Pegs would be first on my want list, within reason. As for the tilt issue mentioned in a earlier post, the seats do recline, a little, as long as the seat isn't all the way back. It took me a year in the aircraft to figure that out. I have flown with some big guys, and with the seat all the way back and the rudder peddles all the way forward they seem to make it work.