The multiplying balls are perfect for beginner or experienced entertainers. The trick is made for stage magic mainly. They come with instructions for a basic routine on how to use them. But the main reason this deserves a 5/5 is because this prop can be used in countless ways. You can make it appear, vanish, multiply, divide from one ball, ect. You need to be able to use some slieghts and a bit of misdirection (depending on how you perform) but I definently recommmend getting this if you are performing on stage. Now about colors, I prefer the white colored balls because they can be seen clearly from a large crowd. (Try to choose a color that doesn't blend with the background) Your routine can be even better if you get different colored balls. This can cause some really interesting color change variations. And finally, handling. If you have small hands and you cannot hold all 4 balls between your fingers, then this may become a problem. The balls have a texture that will definently help with preventing slipping or dropping them. The production of each ball is fast and smooth. It is very simple but the angles can cause trouble. Keep everyone infront of you and the rest is as easy as reading the manual....