>>28140830Storyline is the same.
As for the Pokemon, that's the point. Black and bad Pokemon and White has good Pokemon. But for the sequels, they switch, giving the player of Pokemon Black to have a chance to get good Pokemon in its sequel.
I would say go for White and White 2. I did Black and Black 2, but I prefer White 2 only because of the shiny Dratini you can get for clearing the Tree Hollow.