When you look at these polishes in their bottles you would not guess they are so close as on the nail. Therefore I hope this little comparison helps you. I compared China Glaze Blue Year´s Eve (BYE), OPI Swimsuit Nailed It! (SNI) and Color Club Cold Metal (CM). All three are two coats on the pictures. No dupes here but they are close. Don´t ask me which is my favourite, because I love them all!