White and Milk Chocolate
Generally speaking, neither white chocolate nor milk chocolates are as ´good´ for you as dark chocolate. The differences are in the % cocoa and the amount of sugar. Since dark chocolate has the most % cocoa and the least sugar and fat, by definition, dark chocolate is going to be better for you. That said - if you go for really high quality chocolates (like Dolfin, Cote D´Or, Godiva, or Cachet), in general you are getting less sugar and saturated fats - and more of the good stuff - cocoa butter and chocolate liquor.