The toothpaste tastes amazing, lathers better than any toothpaste I have ever tried, and leaves your mouth feeling extremely clean. I absolutely LOVE it. Although some say it is pricey, I would definitely pay for the full size of this. I don't really get excited about toothpaste, but I actually look forward to using this just because of how awesome it is! Some people say it wouldn't last long, but that is because they are probably using too much toothpaste when they brush. You only really need a tiny dot, not what you see on TV with the whole brush covered in paste.
My ONLY concern is that it isn't approved by the ADA, which could be bad for some people. However, my dentist didn't seem to have a problem with me using the toothpaste after telling him about it. So ultimately, it is up to you and whatever your dentist thinks is best!