Definitely worth it
This is the second time I've purchased these for my Oral-B Vitality. The first set I had didn't fit tight at the base of the brush, but they still worked good enough for me to keep them. This last purchase, they fit perfectly. I've never had any problems with losing bristles. Definitely worth the little amount of money you spend on these when you would spend 5x as much on the genuine brush heads.
Rating: 5 stars