I've only played the first Metroid on NES (actually it was an online NES emulator), so I really know nothing about Metroid.
What are the main selling points of the Metroid Prime series and Corruption specifically? Let me give you a list of games I really enjoy and you tell me whether or not it's worth trying out MP3. These go in order, none left out:
-Spyro (Legend of Spyro series)
-Zelda: Twilight Princess (no other Zelda's)
-Super Smash Bros. Melee