Getting a high crit chance will cost you less mana because you won't have a lot of sp to put it anywhere. If you only focus on physical attacks on a knight might as well max crit. If you have tons of elemental attacks you want to go max mana increase and 1 in crit. I ran in a lot of mana issues when I had all skills. I still need to test out Rage explosion and its 100% crit for 45 sec.
Face it Lunia is dead get a reality check please.