This is not an Apple vs MS vs Canonical discussion at all.
Strictly your GUI preference.
Please vote and offer your reasons.
I much prefer each window owning its own menubar (if it wants/needs one). here are the pros and cons I can think of with my biases included:
Main Menubar
Pros
- It is always in the same place (whatever)
- If very little, it uses less screen space (whatever)
Cons
- The active window may not be raised so the main menubar is not always corresponding to what windows are on the screen
Window Menubars
Pros
- A window doesn't have to be in focus for a menu item to be clicked
- A window isn't forced to have a standard menu
Cons
- Takes up more space? (whatever)
Bookmarks