Dextry

I have my PLD lvl 50, and when it has lvl 1 and was my only char I read a faq page and said to me the is useful the strenght for parry, vitality for HP and Dextry for block.
And I always had those points in every type, but my real question is that faq was ok?

From what I understand, T_T, you asking about bonus stat that you receive from lvling? correct? if that the case put all 30 point into Vit.
your itemize priority should be VIT > accurary (stack till cap) > Parry/Det/Crit <-----(Depend on who you ask, some people say Stack parry some go for Det/Crit. these 2ndary stat only their for min/max. not stacking them will NOT make or break your PLD.)

I think he's asking about the free choice points and whether Dex/Str are worth it for the mitigation increase. Far as I know, their benefit on defense is too low to be of much use, most tanks just spec 30 Vit and leave it at that.

As a Paladin, definitely put it into Vitality.
Warriors can either have vitality or strength, but neither of them should be dexterity.