What is 'You are my favorite friend' when translated from English to French?

Tu es mon ami préféré! and Vous êtes mon amie préférée! are French equivalents of the English phrase "You are my favorite friend!" Context makes clear whether an informal "you" to a male (case 1) or a formal "you" to a female (example 2) suits. The respective pronunciations will be "tyoo eh mo-na-mee prey-fey-ree" and "voo-zet mo-na-mee prey-fey-rey" in French.