Much quieter!
This review is for the head with the darker blue bristles at the top of the head.<br /><br />I previously have been using Sonifresh Sensitive Sonic heads, which worked great but were a bit noisy/buzzy.<br /><br />The very fisrt thing I notice with this model brush head is much quieter and less buzzy -- a very nice improvement!<br /><br />It also feels a little bit more comfortable than the Sensitive Sonic head.
Rating: 5 stars