I think Focus Blast/Thunderbolt/Shadowball is the best right now. Messed around with Dazzling Gleam and Sludge bomb a bit and found that pretty much everything that doesnt get hit by STABed shadowballs gets hit by focus blast hard as hell. Accuracy sucks but IMO it's the best choice. Dazzling Gleam is too weak, only hitting Hydreigon hard enough for me, but its great in doubles.
'Come fight beside me,' I said to myself, and although it doesn't make sense, I held my own hand as a small sign of trust, and together I made my defense.