Ear Buster (Exploud) (M) @ Choice Specs/Life Orb
Modest Nature (+SpAtt, -Att)/Timid Nature (+Spd -Att)
EVs: 4HP, 252 SpAtt, 252 Spd
Specs STAB Boomburst is simply amazing. 140BP move with no drawbacks. The icing on the cake is that Exploud gets the awesome ability Scrappy, meaning that those pesky ghosts can no longer switch in with impunity.
Flamethrower/Fireblast to roast Steel types switching in predicting Boomburst.
Ice Beam/Blizzard and Focus (Miss) Blast is for much welcomed coverage.
Fire Blast/Blizzard or Flamethrower/Ice Beam is the classic reliability vs power issue, but I lean towards Flamethrower/Ice Beam because of the nerf.
Playing this set is simple. Spam Boomburst, or pick an appropriate move and watch things get major damage.