I flew both the Airbus A320 and the 737-300/400 and -800.. .Unfortunately I'm now type-rated on the 737 but if I had the choice then give me back that lovely A320 !!!. .Comparing both airplanes is not possible. You can't compare an old American car from the early '70 with a new model Mercedes!!. .Even the 737 NG is still an old aircraft. Never heard about ergonomics, small cockpit, still the old systems but with some nice screens.. .Increasing the speed of the 737 NG is nice but please do something about the cockpit noise. At M.79-.80 you simply can't talk to eachother in a normal way !!