I hesitated with other electric jets. Finally my choice fell on this one for 4 reasons: 1. I have a contract EJP (peak day Electricity) so for me it is economical 2. The fact that it is connected directly to the valve limit the stagnation of bacteria and is therefore, in my sense that most hygienic dental jet that has a water tank. 3. I read that electric jets are sometimes too strong. So the advantage of Viv'eau is total control of the force of the jet on my patients and my gums crowns that I did not want to detect. 4. Some women complained of the difficulty of holding the electric utensil with their little hands. I bought an essential /parodonthite...huile to treat gingivitis + brushing and jets = operation for more!