A question for you vintage soap connoisseurs...How much difference is there between vintage Williams and vintage Colgate? I'm going through all my unused soaps & creams and using them at least 3 times and I'm wondering these are different enough that it's worth turning all of these pucks from NOS to used. If there's a noticeable difference, I'll try them all now, but if not, I'd like to keep two of them unused for now. here's the soaps I have: