Maguile, the store TP magian scythe is likely your best option.
Pretty sure the only OA2-3 weapons that are worth using are H2H (w/footwork only) or offhanding the dagger (at least for DNC). Potentially all the one handed OA2-3 are worth using, but I haven't heard anything about any of the two handed ones being useful since you take such a huge hit on base damage.
XI Wiki


