Buzzy, but at the price . . .
At a small, small fraction of the cost of the brand name replacement toothbrush heads, these are a raging 5 star deal. Small demerits for a buzzy, unpleasant harmonic (jarring at first to a former musician) -- possibly due to cheaper adhesive or fit-together tolerances than the originals. Bristles are comfortable and seem like they will easily reach their expected 3-4 month anticipated life span. At this price I have acclimated and will show a pearly white smile for my purchase..
Rating: 4 stars