Philips Sonicare 4100 Series Toothbrush vs Philips Sonicare 1100 Series Toothbrush

“Philips Sonicare 4100 Series offers a less intense sonic brushing sensation, ideal for sensitivity and receding gums. It also includes a pressure sensor.”

“Buy the cheapest Sonicare that has a timer. That's all you need. Everything else is a gimmick.”