34 years ago, I fell in love with water technology vacuum cleaning and purchased my first Rainbow. Recently my second Rainbow, of 18 years, stopped working and I was forced to make a decision to replace it or repair it. Thankfully, I discovered the Sirena Vacuum Cleaning System and was able to replace it for less than the repair cost. I'M LOVING MY SIRENA! I recommend the Sirena vacuum to anyone interested in a water technology cleaning system.