Currently Myth gear is (okay, not all pieces) the best equipment in the game.

Coil is currently the hardest content in the game. It drops Allagan gear.

Even though the best scenario is to mix and match Myth with Allagan, generally speaking Myth > Allagan.

However Myth gear is obtained by doing a few weekly run of extremely easy dungeons. Waiting two weeks, and trading in your chips for what usually accounts as the best gear in the game.

I really hope that for the incoming new AF that was shown in the Live Producer's Letter, they have designed a better system and stop using caps to lock us out of equipment, handing in the best gear for merely sticking with the game long enough.

At the very least I hope it comes in second and make the hard content actually drop the best gear.