Dentist tried to sell me Colgate as apparently far more effective than other toothpastes. Told him I didn't like the taste. Dentist non-plussed by this but as he'd just been raving about my astonishingly clean teeth, I felt it was OK to go on using toothpaste that doesn't make me retch.
I don't know why practically all toothpaste is minty - and why it has to be such a powerful mint! It's horrible!. My currently preferred one is Kingfisher Fennel (sort of aniseedy) , though I reckon a really good flavour would be clove and cinnamon. Mmmmm cinnamon.