Don’t be fooled into spending much more for higher-end Sonicare models. The more expensive versions only add features you will never use that don’t remove any more plaque than this basic one. One mode, small charger, simple, effective, awesome. It’s got the quadrant timer and pressure warning, which is really all you need. Same frequency vibrations as the top of the line, just not different modes which don’t do anything magical and nobody ever uses. Only gripe, which applies to every model I’ve used, is the black gunk that accumulates between the brush-head and the handle. Mold? Bacteria? The last thing I want in my toothbrush. You can clean it out, but I wish it could be designed away. Anyhow, this basic model is really as good as anything you can buy, at a terrific price.