Originally Posted by Shade
Yes, MULES are key. In all honestly, calling down supplies is a waste of energy. ALWAYS use MULES unless you need to scan for an emergency or to check up on what builds your opponents are going with.
Depends on BO as well. The double factory/double starport BO requires you to call down supply at some point in time to not get supply locked while still be able to spend everything.
Usually if it's the mid game, I would usually scan once or twice for tech. Save scans for sneaky stuff too, like banshees or dt's before I get turrets up.
However, this is true that those are more minute aspects of the game once you have mechanics down, and even I dont' have my mechanics down. lol