Hello all, so i LOVE my chanel, but would like to have one birkin in my collection. I am generally a small bag person (love my chanel mini's), but I would like to have a birkin 30. What color would you choose for your one and only birkin? I've narrowed it down to either black or one of the greys (etain, graphite, gris M). And do you all use your birkins as a work bag bc i generally only use this size bag for work. Thanks!