Nice opinions, but only Mokone got it right
This build works like a charm in the TA build me and my guildies are playing.
Mokone i remember that game, was a nasty one

In the end i got so tired of healing my party and decided not to heal them to end the game
Yes, i was the monk
I have to explain the build because anyone who sees Heal Sig on monk goes like <<what a noob>>
It's not entirely like that.
With 9 points in tactics u can use a req 9 tactics shields so u get the benefits of the +16 armor.
A team Member is a Steady Stance Warrior with 15 in Tactics who keeps Watch Urself up all the time so u have another 25 armor. He also have Shields Up (lasts 20 sec)
Soldiers Defence at 9 tactics last 5 sec (10 sec recharge) so 50% of the time u have 75% chance to block.
Bonetti is for emergencies and also when u are low on energy.
The build works like a charm. Mokone knows better
And here is a screen to prove that it also works against most of the builds used in TA: