nice balance between soft and firm some fitment issues [SEP] this is a good middle ground between the standard oral b brand brushes and the ultra soft oral b brand brushes i find the standard brush to be a bit too firm and while i like the softness of the ultra soft sometimes i would like just a bit more firmness to the bristles this is a good compromise it is softer than the standard but firmer than the ultra softon the downside it does not fit as well as the authentic oral b brushes it is a little bit loose which causes it to be noisier in operation than an authentic brush it still works fine and stays on firm enough so there is no danger of it coming off in use but there is enough play in the fit that it is more buzzy than an authenticeven with the fit issue this is a decent alternative to the oral b brand brushes and a solid star brush