I have three sets of Destiny Tails that I have been putting on my teams. A team like this, using a blocker in conjunction with the Destiny sets helps keep the damage back to the blocker minimal.
Also, I invested in the Magus Characters I like to get through AAA since you can have duplicates. I have 3 Liliths, 3 Choppers and 2 Alchemists. Combined with the Destiny Tails, I haven't lost on AAA in season 2.
I hope AAA is still Magus only this next fortnight.
Good luck man!