1. How fast can you get the pointer to the menu?
2. How easy is it to get the right item?
If you have a "large" screen, I would contend that having a dedicated menu button on your mouse/trackpad/trackball/pen is the best possible thing for any user who isn't a complete novice. Don't wave the pointer somewhere else, make the menu come to you.
If you can't do that for whatever reason, then having a high-acceleration pointer that can be flung all the way against an edge is next best. Going back to where you were, though, will be relatively hard.