Also don't forget if you have a bard in party which, in most cases, you would you would have 3% buff in Dex hence you need 240 Dex on your character sheet to hit the amount same as needing 393 STR on character sheet to achieve next Block/Parry strength increase. I play both Warrior and Paladin though most of the testing on Warrior is off Coil mainly focusing on mitigation cause group says, Why Warrior and make our life hard =P.

The dex thingy was already done by someone already. And it is as exact as it goes to maximize every single stats, cause going beyond means nothing cause you can't reach another plateau, just as stated it takes 45 Dex + 7-9 Dex manual stated/materia using Gryphonskins/ Crafted Accessories. Without them looking into Dex value is futile cause you sure aren't going to put 30 stats into Dex and still for short from the plateau and risking 400+ HP.