I own both, but I think i enjoy Black more. GPH 2 can be a little cloying some wearings. And Black seems a bit more interesting to me quite honestly.
Longevity seems to also go to Black. I get a couple more hours out of Black before it because a skin scent. Neither have stellar longevity. Just average.
BTW, if you're planning on starting any more "VS" threads than you already have, you should probably just make a poll. It would be easier, and much less annoying.