The drawback to smaller droplets is that the larger surface area means they lose heat quicker, and so can consume more energy. The same problem occurs with tho

The drawback to smaller droplets is that the larger surface area means they lose heat quicker, and so can consume more energy. The same problem occurs with those heads that put air into the center of each droplet. I recommend trying out h2okinetic shower heads (now owned by delta in the US). They have channels that cause something similar to cavitation which then results in large droplets widely spread. It is like being in a rain storm. The result is feeling like more water is flowing than actually is, so flow rates can be reduced. Their 90 second fluff piece video explains it, with the actual working (not moving) part shown at 30 seconds in: https://www.youtube.com/watch?v=lxWeyd-pnK8 https://www.youtube.com/watch?v=lxWeyd-pnK8