I love this OPI colour- That's Berry Daring. The formula is super smooth to apply, the colour is rich and it lasts well. Although it is a creamy formula, it has a slight blue iridescence, which makes it more interesting than your standard hot pink.
I get mine from www.beauty4nails-body.co.uk. This is a fantastic site as it stocks a wide range of polishes including OPI, Essie, Zoya, China glaze and Orly for a great price! Most importantly the swatches on the website are very true to colour, which I often find is not the case with some sites or ebay.