If you've never played SoulSilver before, then you should definitely get it. ^^" You may have played Pokémon Gold or Silver, but Pokémon SoulSilver is a completely new game. They do have some similarities here and there, but they also have a lot of differences, though. I wouldn't really want to miss out on this game if I were you. Plus, Pokémon that you end up catching in this game could later be transferred to either Pokémon Black or White (or maybe even X/Y), so that's a good thing.