Yup, it's all about the gear. For now, as i am only lvl27 i go for gear increasing Intellect and Stamina, i have a lot of health and mana this way and the extra mana is really helping me out when fighting large groups in PvP or high lvl monsters in PvE. Today i faught a monster three lvls above me by standing at edge of my range, casting SF IS and MF then spamming wrath untill it died, i was amazed to find that i still had half mana (i cant say the same for my health) Intellect really pays off, which is good because im currently broke after spending all my money to re-gear. Can't wait till higher lvl when i start getting the good, spec-specific gear that helps so much