If you are a lvl 300-400 or higher. I´m pretty sure of this answer
| Elite Knight | Elder Druid | Master Sorcerer | Royal Paladin |
1º | Parry | Freeze | Zap | Parry |
2º | Freeze | Zap | Freeze | Freeze |
3º | Zap | Dodge | Dodge | Zap |
4º | Dodge | Parry | Parry | Dodge |
And this its the reason for each vocation:
KNIGHTS
1)Parry: As a Knight you always want to hunt killing 8 by 8, in places like Ferumbras seals, Catatumbs, Nightmare Islands, etc. The better way to get more exp its killing more faster and with parry you have a chanse of a 10% to make 1 hit. And for example, in Dark Torture Seal of Ferumbras, you want to use the parry on the Vexclaws, because its the creature with the bigger spawn there and the second one that hit more and REMEMBER, the parry charm reflect a percent of the all damage of the creature so, if you have 50% of protection of physical, and vexclaw hit 1.000 you only recive 500 BUT you can reflect 1.000
2)Freeze: Following the same reasons of the parry, the freeze damage its the most used in the game. In roshaamul, ferumbras, catatumbs, etc. you always are going to use Avalanches or freeze damage so, you want to deal that extra damage on ice element
3)Zap: Following the same reasons of the parry, the energy damage its the second kind of damage that you are going to use in your hunts, as a Knight, you will need it in places like Plagesmith Seal of Ferumbras
4)Dodge: The last Charm that you are going to use alot its the Dodge, and why?. This parry its very neccesari in zones that have very powerful creatures like the books of library. If you can dodge some attacks of this creatures, your druid its going to be happy and calm
Druids
1)Freeze: As a Druid your better element its the ice, because you have 3 things
-Eternal Winter : the most powerful attack of th druids
- Strong Ice Wave : the second most powerful attack of druids
- Avalanche Rune : the most used rune in hunts
And with the Freeze charm you can improve that attacks
2)Zap: At this point maybe you will be wondering why Zap and not Poison. And this its the reason. The Thunderstorms. It is very probably the second rune most used in hunts
3)Dodge: When you are hunting in alot of moments the Knight or the Paladin they can not help you, because they will be looking for monsters and you are going to be solo with all the creatures
4)Parry: The last charm that you are going to use alot in hunts its the Parry, because in hunts you dont want it but you ALWAYS are going to recive massive area attacks and with some lucky you can make a very good extra damage
Sorcerer 
"I'm going to be very quick on this one because are the same reasons that I use on Druids"
1)Zap: Are the same reasons you use in Druids but with Energy attacks
2)Freez: Same reasons but in Ice
3)Dodge: Absolutly the same reason
4)Parry: Absolutly the same reasons too.
Paladins
"At lvl 300-400 or more, the paladins play absolutly in the same way as the Knights so, same reasons too here"
"Parry"-"Freez"- "Zap"-"Dodge"