I have only found three popular low GPM showerheads - the Delta Water Amplifying, The Oxygenics, and the WaterPik EcoFlow. I have not tried the Ecoflow yet so I can only discuss the Delta vs the Oxygenics. Purchased this Oxygenics showerhead along with a Delta Water Amplifying low GPM showerhead. This showerhead is not bad but has some drawbacks. Comparing this to the Delta showerhead I would have to say overall I liked the Oxygenics a bit better. While the Delta head is much quieter than the Oxygenics (since the oxygenics uses air to create the feeling of pressure spray), the Oxygenics "seems" to produce more water and can rinse off quicker. The Delta has a buzzing sound to it, which while subtle, somewhat bugs me - the Oxygenics is very loud (so much so the wife was worried about damaging her hearing). While both the Oxygenics and the Delta water dropets sting a bit, the Delta droplets seem to sting a bit more (not sure why) but the Oxygenics seems to have a stronger stream. The Delta showerhead seems to take longer to rinse off soap and shampoo thereby eliminating any low GPM savings with longer showers. The Delta is a bit more "drippy" water while on the body while the Oxygenics is more "misty". My wife complained about both being far too "misty" further away from the showerhead (shorer than me) and unsatisfying (even with the water savings) harder to rinse and colder since water cools by the time ti gets there. The Delta spray seems to be very wide near the bottom so when warming up the shower, I need to close the shower door or I have a water puddle on my floor. No real massage effect with either showerhead (unless you consider prickly stingy water bits a massage - more like getting sandblasted). So, all in all, not very satisfying and I will continue to look for better options. I have seen the larger (four hole) version of the Delta showerhead (which got good reviews) but not sure if the buzzing or "misty" factors would be worse with the larger unit. If you can overlook the noise (and are relatively close to the showerhead as to avoid the mist factor) then the Oxygenics will probably be great but if you have multiple people using the shower, then you might be out of luck here.