Are you familiar with Fitts' law? The advantage of the global menu bar is that you don't have to find it: you just flick your cursor quickly upward, and it will

Are you familiar with Fitts' law? The advantage of the global menu bar is that you don't have to find it: you just flick your cursor quickly upward, and it will stop at the top of the screen, right on the menu bar. This can be more efficient, unless you have for some reason chosen a flat pointer acceleration curve.