i don't like the metallic black with the black hardware. i do think if you are torn between the two, you should go for the pink just because black will probably get repeated again, but the pink won't be as likely.
Well, if you are going to use the pink alot then get it. Are you also going to eventually get the black one? If you can only get one bag, I would go for the one that you really love. Also pink is harder to get then the black.