If you're going for black, I say SURYA!!!! I LOVE Vernis, thus the Patent Surya is exquisite and perfect. It's a lot of patent, calls for attention so have the confidence and don't be intimidated with the attention you'll get with it.
I LOVE the leather of the Mahina. I have the Gris Mahina XL - so buttery soft, but the Mahina Black in any size does nothing for me and does not complement this bag as much as it does in other colors! Let us know what you get.