Depends, I have both. Maze for 10+ hours of smoke, tube for 2-6 hr of smoke and smaller footprint. Of course you don't have to fill the maze up so you can get shorter smokes with it.
For my #3, I use the tube more frequently because I can tent it with foil to keep drippings off it easier than the tray. I did have to put grounding clamp on end so it sits at an angle to keep it burning.