I like muk. If you want to throw on a zapdos, do it over pgon2. Muk is pretty damn consistent always, if even on explosion alone. Pgon2 vs even DE lax isn't a surefire thing; both of you are taking 50% a turn if you're both attacking. Recoil hurts you a lot.
And roar over crunch is my choice. FB covers far more than crunch does; crunch's only merit is lucking spc downs. FB covers egg just as well, plus you get steelix, skarm, and heras.