handle comfort, ease of removing the brush-heads, etc. The Philips Sonicare 4100 Series is part of the Toothbrushes test program at Consumer Reports. In our lab tests, Adults Electric Toothbrushes ...

handle comfort, ease of removing the brush-heads, etc. The Philips Sonicare 3100 Series is part of the Toothbrushes test program at Consumer Reports. In our lab tests, Adults Electric Toothbrushes ...