Rain fall shower heads are known for being much larger than a standard fixed or handheld shower head, but this doesn't necessarily make them better. The benefit of a rainfall shower head is that the water can fully cover your body in a stream of falling water to mimic the feeling of a heavy rainfall. However, a larger shower head can also reduce the water pressure, so if you are looking for a firm, massaging spray, then a large shower head isn't the right way to go.