This toothpaste is quite a bit more expensive than others (for a smaller tube, too!), but when I saw it on special at the supermarket, I thought I'd try it out anyway.
The taste is quite nice - it's a lot mintier than my regular toothpaste, and I felt as though it really cleaned my teeth. I'm not sure about a whitening effect though - I used it for a month, and there wasn't really a noticeable difference.
I had heard that this toothpaste didn't really do what it said it would, but after using it for about a month I have noticed that my teeth are a lot whiter! Especially in photos they are looking much whiter.
Tips: Need to use quite a lot on the toothbrush.