I like knife pleats for their hang and movement. Box pleats don't "swish" the same. That said, I have seen two types of box pleats that DO swish, and neither of them looks like a beginner project. They are the military box pleat (knife pleats with a box pleat on the edge), and the double box pleat. Someone on this site sews the double. They look very nice and have more material, giving them better movement.