I don't know, man. They're very customizable, and some models have memory banks. I never need to go in the menus of my pen-f. And The OM-1 has a much improved menu system, with a customizable "my menu" page, which opens directly, on which you can stick your most used menu items (but, sadly, it's not included in the saved memory banks).

Furthermore, I find the physical buttons on the om1 are so customizable and can do so many things, that I never go in the menu, either. I haven't tried new models from the other makers, but the olympus models I have are much nicer to use than my old canon 40d and nikon d80.