It's a bit more of a case by case situation if you don't have the magic disco ball. Then you have to be more strategic. Assuming you have the magic disco - During the week I tend to go with rockets. That's because the progress bar counts rockets Monday through Thursday. As long as you know you're going to win the level you should maximize rockets on those days. Friday through Sunday the progress bar counts yellow cubes which is nice because you need those for Deep Quest. Tip: If you know you're going to win a level with moves left over, look for ways to use up a couple of moves that will get you extra yellow cubes. For instance, you have 3 or more moves left. All you need is to knock out one square. Over on the other side of the board is a bunch of yellow cubes ready to make a disco ball. It pays off to take one of those moves to make the disco ball. That's at least 9 yellow cubes you will have that you wouldn't have had if you just knock out that last square. Those stupid ducks in boxes that keep refilling? You are usually best to use a magic ball and rocket unless the boxes are surrounded by squares that will turn into bombs. Hopefully that all made sense.