I was going to suggest selling the Black Day as well, unless you really love it and are balking at selling it. Also, the fact that you're questioning the Bordeaux at all makes me think you're not completely, totally in love- so you need to think about which you would grab first without thinking if someone said, "Quick! Grab a B-Bag out of your closet and let's go!". And if the decision is too hard, sell the black Day. There are a fair amount of those floating around from what I see and the '05s are not that rare yet...
Or, you could just keep relisting your BI First and hope for the best. I am in the exact same situation right now with things not selling and it's frustrating, but eventually they will sell, so unless you need to make this call right away, that might be the best way to go...