Favorite Battle Theme

One thing I note with every Pokémon game is the music. To me, the music plays as important a role as the story. Typically, the best music in Pokémon games is the battle themes for the villain battles, Legendary Pokémon, the Gym Leaders/Elite Four, or the Champion. So my question to you is this: Which of the many themes from the Pokémon games is your favorite?

The battle music for the B/W Elite Four was phenomenal in my opinion. It was a very driving, intense theme, the kind you'd expect for a Champion rather than for an Elite Four member. Nonetheless, it's one of the best Elite Four themes in the franchise.

Team Plasma's theme was amazing in B/W; it was a unique theme that I never got tired listening to. 'Tis a shame it was defaced in B/W2. :c Team Flare's theme was also incredible.

I can't really say what my favorite Champion theme is... They're all great in their own ways. I'd say that R/S/E's Champion theme, as well as Red's theme (though he's not a Champion) are amazing.

Giratina's theme in Platinum stands out as the best Legendary Pokémon theme to me. It not only suited the Pokémon, but also the environment: a chaotic, twisted world. It's a diverse and epic piece. X/Y's legendary Pokémon theme is also fantastic.