No Complaints Here
At first I was concerned about the included instructions that suggested dipping in very hot water before first use (maybe even suggested "boiled" to me) and I did see a couple of bristles in the sink after using the first one the first time.  I contacted the seller (Sekmet) and they responded quickly saying not boiling, but very hot, and the bristle issue was occasionally a few with initial use.  That proved true as I'm still using that first one and it never happened again.  I use this one alternating with a couple of other brushes, another soft and my regular medium firm.  I don't know from charcoal toothpaste and don't know which toothbrush does what, but I like them all.  If I had to pick a favorite, this would win.  It is truly soft, even softer than the soft brush a dentist gave me, and the handle is way more excellent than any other's design and grip I've ever used.  Also the bristles have yet to show any wear.
Rating: 5 stars