I usually buy my Pokemon games from Gamestop/Electronics Boutique or Wal-Mart.
As for the game choices:
HeartGold and SoulSilver were some of the best Pokemon games I've ever played. I really liked seeing my favorite Pokemon walking behind my character. I enjoyed being able to go to the Johto and Kanto regions. And I liked being able to fight 16 gym leaders.
You don't have to have B/W to enjoy or know what's going on in B2/W2. They only things is the NPCs will mention "the hero from 2 years ago" a few times. Also if you want to see the flashback scenes (and there are about 10 of them) then you will need to have beaten Black or White and have another DS to link B/W to B2/W2. Also B/W is just generation 5 Pokemon. I played all four games. I personally like B2/W2 better just because of the Pokemon from previous generations are available from the start of the game, there are more towns, and White Forest and Black City are better (imo). But I also liked knowing exactly what went on "2 years ago" from B/W. So I would recommend you buy B/W then buy B2/W2. I hope I helped. If you have anymore questions, feel free to send me a message. Good luck.
Last edited by RogueLapras; 22nd February 2013 at 10:14 AM.
Pokémon Y Friend Code: 4441-9508-9799
In-game name: Daniel
I have an Electric Safari: Dedenne, Helioptile, and Luxio.