BL

The DiamondClean and DiamondClean Smart lines are the slimmest/sleekest of the Sonicares. However, all of the more modern Sonicares (including the models you mention) are much slimmer than the models of yesteryear (some of which are still sold). Many retailers have "dummy" Sonicare models on display so you can hold them (Walmart, Target, Bed Bath and Beyond, etc...).

We don't have information about charging times. Having a lithium ion battery would be an asset in that regard. All of the models you mention do.

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