Product review (5 stars): The best shower head ever (that happens to save water and energy)
These shower heads are amazing.  I first encountered one on a cruise ship around 2009.  It's like a comfortable pressure washer for your shower.  Without going into too many technical details, uses the Venturi Effect and a special turbulence chamber to change the water into thousands of tiny water droplets that kind of explode when they hit.  It's a very pleasant shower and rinses very efficiently.  After enjoying it for a week on the ship (and wondering why I couldn't get a shower this good at home), I took a picture of it, and proceeded to go home to buy a couple for my showers.  Much to my surprise, they don't really sell them much in the US - that is, they are really hard to find.  I ended up ordering two from a private seller in the UK.  There may be cheaper places to obtain them than here, but it is great that they are available. I didn't buy them for the purpose of saving water or electricity, but they do save a lot - and that adds up, especially if you are heating the water.  If you want the best shower ever (while accidentally saving water and energy), this is the shower head for you.  This is a hand held, and is sold as the shower head only, so keep in mind you will need a standard shower hose and standard hand held shower head holder to make these work.  I used flexible metal hoses, and they look very nice.