Any watch will be fine I guess, as long as its not gonna be a hassle to change/reset your time in flight. Like Maverick said, you're mostly gonna use it during navigation as a stopwatch. One of the captain's I know uses a usual swatch during flights, which according to him is all u need IN the cockpit. Of course, the more branded ones would be eye candy, but I don't think you'd wanna be meddling with them too much right?
I myself am happy with my Casio Edifice when flying, comfy and easy to use..haha
