I usually get a coffee stain on one tooth that is not quite in line with the rest. For 20 years I have depended on a dentist. Been using quip for a month now...NO STAIN!
I like the toothpaste, it does not feel gritty or taste like candy. Even though I have not received a new battery yet, I would like the quip to move to a recycling program or a rechargeable battery system. I would want to charge the battery externally so as no change to the brush, it's perfect.
Bottom Line: Yes, I would recommend this to a friend