I bought the Lelo Mia after getting sick of having to buy N batteries for my little clit vibe. It was a powerful vibe but only the first couple of times after putting a new battery in. So I decided to go for the Lelo Mia and I love it. I love the patterns on it and the fact it locks and it just looks like a usb stick. I carry it round in my handbag incase I need a wee play. I am contemplating replacing my other vibrators with rechargable ones.