I am learning a lot lately about birkins. I have some easy questions for the experts... Can someone explain to me the differences between the leathers, Togo, Clemence etc.? In exotics what are the different types and price ranges? Is lizard a less expensive and great alternative to Croc? In terms of colors, when I walk into Hermes, and I see ____________ I should think, "Wow that is a special and rare Birkin and I should definitely consider buying it because I won't see it again (provided I like it in my own personal taste too!)" For example I have never seen one with gold hardware...is that rare. Or if you cannot say... then if I walk into Hermes what is a commonly seen Birkin... something I should pass on if I want something special. Sorry if these questions are too easy for you guys, or if they have been answered before. If so, can you post the link? Thank you so much and happy holidays.