Which game should I get; pokemon black, or pokemon white?

I have pokemon white. The only reason I have at first is that I can catch the black dragon/electric legendary (Zekrom). But as I played the game, you will also get a male eagle pokemon named Braviary, instead of the vulture pokemon named mandibuzz. But if you want both legendary pokemon, you can get it through GTS. The only thing good in pokemon black in my opinion is the black city, in there, you can battle many trainers, and there is also a shop where you can buy certain stones (i think). But you also have White forest in white, where you can catch pokemon that are not in white or black depending on the NPC in the forest.