Originally Posted by Solax

I played Pokeom Black and it rated a solid meh/10 from me.
The gameplay is good and Pokemon is the type of game that always advances well in that regard but what put me off personally was all the new Pokemon. That's just me though.

Regarding Black and White 2, I looked at it and thought "Why even bother. I didn't like the first one so why get this one." One of my friends though, a serious Pokemon fan bought the new one however and would highly recommend it to anyone.
Main differences that I know of are some new areas and a legendary that can change forms. (Like Giratina in Pokemon Platinum)
You can look up a list of complete changes if you want.

Myself personally: Wouldn't recommend it.
My friend and various others: Would highly recommend it.

I'd say that if you haven't played Black and White 1 and you're not put off by Nintendo killing a great game series then give it a try because it offers heaps of gameplay and reply value if you like that.
Good luck. Gotta catch 'em all.