The Sonicare DiamondClean uses densely packed, diamond-shaped bristles and high-speed sonic waves to thoroughly remove plaque and stains from the teeth. Using the Whitening Mode and included Diamond Cleaning Brush together effectively removes stains, giving you naturally white teeth. The Gum Care mode helps keep your gums clean and healthy.
I have always used Philips' electric toothbrushes so I can't compare with other brands, but I believe it's a great product, because it really cleans your mouth compared to manual brushing. When the battery stops holding a charge, I buy a new one and every time the product is better than the previous one. So I don't think it's too expensive. I'm on my 4th one (lol). The only complaint is its length. I wish it were a little shorter. It doesn't look so good in the bathroom and I have trouble finding a good place for it. That's why I'm giving it 6 stars. I hope they change the length next time. Dear Philips, please make it shorter!