Good review but one comment: The time the water lasts is a function of pressure and how much you open the spigot. Since our unit is such high pressure, it will not last more than 3-4 minutes at full throttle with the nozzle completely opened up. Think fire hose vs garden hose. Dial down the pressure to get 10 or even 15-20 minutes of water. Each unit has an on/off elbow that has a black knob/handle to dial it back. You can also dial back the pressure using the nozzle itself.