The only reason I'm for the Allagan axe is the stat increase coming in 2.1 (presumably), however no matter what combination of gear I use, i have more ACC than I need.
Here's my current BiS Build for 2.1: http://xivdb.com/?wardrobe/5479/Taal's-BiS-WAR
Is the Det/DMG increase over the huge parry buff is worth it?
EDIT: changed materia on Accessories because is incorrect materia caps.
