I have a noir birkin 30 togo PHW. It has always been the HG for me. Although, I happily acquired a gold birkin 30, blue nuit birkin 30 and gris asphalt kelly 28 all togo PHW along the way, my SA knew I always wanted the noir. I love and use the other bags, but I only purchased them as I knew they were exact pieces I would want in my small collection. If any of them had been GHW, I would have passed as I don't care for it for me personally. If you think you would want both color hardware in your collection, then that's up to you. The Constance is very different from the Birkin, so that wouldn't be a problem for me. If you only want one noir Birkin, I'd wait. You'll always wish for the exact one and be sorry you "almost" got it. Just my humble opinion. Good luck with your decision.