Hello, I'm new to the cups and balls, I've just learned it and can kind of do it (not yet mastered, but still practising), the one in Mark Wilson's Complete Course in Magic. I've been practising with crumpled paper balls and with styrofoam cups (the balls' diameters are bigger than the separation between two cups, so that's not very good, lol). I think it is time to buy an actual set. I don't know what to look for, I've been about researching this in the last few days. I have a few questions: What should I look for when buying a set? I'm looking to spend around $20 (slightly more is ok), what do you recommend? What is a chop cup? I'm looking at some on Ebay, because they have some good prices. What do you guys recommend? Thank you.