The installation was easy, a little tephlon Tape and tighten. The settings will depending on your water pressure but are nice and typical of many shower heads minus the price cost. The reason I bought this is for my wife who cannot stand on het feet anymore and uses a shower chair. This allows more freedom and control for her to use without being blasted in the face by a non moveable one. The reason for the lower rating is it is made of plastic and not chrome. So it is not heavy Duty material. The finish is novice and will last awhile before needing replacing.