I cannot think of a single negative for this product. Really, nothing. I've seen the Radius toothbrushes at a local health food store for some time and during our last visit my wife and I bought some. She chose one of the Scuba style brushes and I chose the Source (with the wood & resin handle). I could not believe how clean my teeth and mouth felt after using it for the first time. Much more efficient and gentle than most standard toothbrushes I've used. It has a smaller bristle head than the Scuba and Original Radius brushes, but it is large and wider than most standard brushes. I have two of sonic toothbrushes as well, and the Source head dwarfs them by comparison. It is a perfect fit for me and the broad head makes it easy to clean the tooth surfaces and brush my tongue efficiently. It is still small enough to fit in all the nooks and crannies of my mouth too. The larger Scuba or Original Source brushes are too bulky for that, even though they clean quite efficiently and have more ergonomic handles. Neither do they have the ability to change the orientation of the handle to suit either righties or lefties like the Source does, and are their brush heads aren't replaceable. I like the fact that when I've worn out a brush head, I can replace it with another with less waste to the environment. The handle design of the Source is well engineered, it fits quite comfortably in my palm and makes brushing less of a chore.
Unless something dramatically superior comes along, I think I've found a toothbrush that I'm going to stick with. I'll keep using my electric toothbrush, but for those days that I want to use a manual, I'll reach for my Radius Source brush.
I have tried them all: cheap ones, expensive ones, manual, electric and I was never completely happy. This one however is a winner. It caught my eye because of the unique wooden handle, which was designed for a human hand and give you a better control. It also comes with an extra head, so you actually buying 2 toothbrushes for the price of one. The head is very light and made of lightweight-flexible plastic. The purpose of that is for it to bend and fit into hard to reach places inside your mouth. … more