Nice improvement [SEP] This is a nice improvement to the Sonicare line of brushes. It appears to be their response to the Oral-B Floss Action line of brushes that have a "paddle" to help get between teeth. This accomplishes that goal with an plastic insert in the middle that helps direct the toothpaste between your teeth.<br /><br />I use both the Sonicare (Healthy White) and the Oral B 5000. Both have their pluses and minuses, so switching between the two gives me the best of both worlds.<br /><br />The Oral-B arrangement of paddles does a better job in getting at the gum line without discomfort. The Sonicare Hydroclean's bristles are stiffer and I find that they irritate my gums when used several times in a row.<br /><br />But, the Sonicare does a better job in cleaning stains between teeth. I'm a tea drinker and getting the stains out between my front teeth has always been a chore. The Hydroclean works very well - noticeable improvement over the Sonicare ProResults and the Oral-B.<br /><br />These only come in the standard size. The ProResults has a smaller version that is great for getting at the tight spots. But, I assume that a smaller version of this would not function well since the plastic insert would have to be very small.<br /><br />If you're a ProResults user these are well worth trying out. If you have tender gums you may want to alternate between the HydroClean and the ProResults (or, as I do, with the Oral-B. The Oral-B also makes a super soft brush if you have very sensitive gums. Hard to find, but works very well).<br /><br />Keep in mind that nothing takes the place of flossing. No matter what you use, you still need to break out the floss to keep your teeth healthy!