I really like them and I'm sure they are much better than the originals. Why? Several reasons, the first of which is that the head is slightly wider than the original. This allows for less irritation to my gums (in my case), although the difference (in my opinion) can't be more than 1/8th of an inch. The extra width seems to prevent that annoyance I get from the originals. Second, the grip pattern on the base. The series have a fairly basic fuzzy pattern. This is especially important if you decide to change the head when the toothbrush has just been used and is therefore damp. The bristle pattern imitates Phillips bristles perfectly and is colored to match. Each head comes with a clear plastic cap. I can honestly say I am 100% satisfied with these replacement heads. They are just as good if not better than the stock heads.
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