Well i'm playing a general mage just now but i might restart with a specialist mage. I've given this careful thought. Conjurer loses out on invocation

(Invocation has the best area-affect damage spells). I'll probably go for abjurer (losing out on alteration & illusion) or necromancer (losing illusion & enchantment/charm). The spells i lose are the weakest imho. What do you think? What specialist mage do you play?