Hmm...that's a tough one!! For now, I'd have to say my faves are Meteoric Swarm, HyperBeam, Earthquake, Hydro Pump/Cannon, Blast Burn, Sheer Cold, Solarbeam, Leaf Storm, Explosion, Dragon Claw, Roar of Time, Shadow Force, Judgment, Spacial Rend, Eruption, Water Spout, and Outrage!! (Sinnoh intro'd ones are italicized...oops, went a little overboard!) :nervous:
However, I hate how a lot of physical moves use humanoid hands and feet in the animations with different colors instead of the monochrome ones from Gen. III. Plus, I wish Meteoric Swarm could've fit as Draco Meteor's name in the U.S. Diamond and Pearl, because that is such a creative name!! Draco Meteor sounds cool too, but the animation shows multiple meteors, not just one.
I wish they could be two different moves, though; with Meteoric Swarm being the current Draco Meteor, and Draco Meteor being a single, focused, powerful meteor!!