I think this is the right forum for this. I was buying some toothpaste the other day and I decided to go for something different than my usual Aquafresh mint gel which I've been using for years now. Go over to the Crest section and they literally have like 10 whitening pastes but the ingredients are all the same. Is there really a difference or is it just a marketing scheme? http://www.crest.com/index_flash.html I ended up going with the Crest Extra Whitening. What do you use?