so far one of the most amazing materia set-ups i have ever seen will kill emerald weapon in 2 - 3 moves and will kill him off in the quickest time possible 1 min 18 seconds(there might be a quicker way but i doubt it).

Have barrert with his missing score and any other armour with max links, in each link place 1 mime and 1 command counter making a total of 8 mimes and 8 command counters (all mastered).

Set his limit break to Ungarmax . Enter battle, toss him a couple of Hero Drinks to push up his damage, and hit Emerald with Ungarmax. Wait for Emerald to attack Barret, and he will counter with 8 Ungarmaxes, enough to kill Emerald outright. Ungarmax is used is because it will do the most separate hits over the shortest span of time.

any others?