To make it short, I use only the Braun Oral B Professional electric brush 5500. I go twice a year for professional cleanings and there always have best results. I use alternately every brush heads offered. The Cross is the only action in which I have every few weeks after the last professional tooth cleaning almost the original feeling of cleaner teeth as after visiting a dentist. The best thing Oral B offers. No gum problems after cleaning. Toothpaste used: Blendamed Complet protection 7. PS: I am not a paid tester. My purchase from Amazon is verified.