Balmain has 10 fragrances on parfum1, among them Blanc Galaxie and Bleu Infini in both Eau de Parfum and Eau de Toilette, plus Bronze, Cuir Élysées, Destin de Balmain Parfum and Ébène. Comparing two concentrations of one name is a good place to begin. Take each in a 3 ml decant, then choose a 10 or 30 ml size.