I use the one that walmart carries...can't remember the name, but it's got half the brush goes up and down and half the brush goes in circles. Keeps my teeth pretty clean. I haven't had a cavity in years and the plaque does not build up as much as in the past. I think it also may depend on your wallet. I know sonicare is pretty expensive, but the ones at walmart are not so pricey. I was told that the electric do a much better job just because they move so much faster than we can and get more brushes in for the same amt of time you might spend on brushing with a manual. But they still give me a manual one every time I go in...even when I tell them I don't use them! LOL
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