Good replacement at a reasonable price
I've bought other generic Sonicare replacement brushes and discovered lots of them just don't seem to have the same brush "vibration: motion as the original.  This one, tho, seems almost identical to the actual Sonicare brush, and I alternated using the two to see if I was imagining it or if it was real.  Yes, it's a good replacement at a very reasonable price.  Don't know about the fading blue bristles (to indicate it's time for a new brush) since I haven't been using it that long.  But I bought two generic replacements at the same time and, by far, prefer this one.
Rating: 4 stars