I have been teaching with both the button and the toggle for years. The lower end radios tend to use a button for what ever reason. I find both easy to use. Hold the transmitter so it works for you. You don't have to hold it so your hand gets cramped. if that is happening, change your grip. If you are just standing there holding the button so he can fly, get him down low doing touch and goes so you can turn him loose. Don't stand there with him on the buddy box for 6 months watching him fly, make him work toward the goal of solo every flight doing specific maneuvers so he learns faster. The goal is to get them off the box so your hands can be on your transmitter flying your planes. Then you can have fun flying together. Both switches serve the purpose.