If... you are still new to magic using, and like to dabble with different spells now and then, a general mage will do.
If... you want to be able to cast more spells and do not mind losing a few types, choose a specialist mage. Choose Conjurer if you still want some defensive spells, choose Necromancer if you do not mind losing some illusion spells( no illusion spells = more space for firepower).
If... you are very comfortable with using magic, and you already know which spells you will always tend to use all the time, then Sorcerer is the way to go. One suggestion I have for people who want to play a Sorcerer, is to plan in advance, what spells you want and in which order to select. Sorcerers are capable of massive barrages of magical firepower if used properly.
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If not a Sorcerer casting total oblivion, then a Paladin meting out justice. Otherwise, I think I will just be a bard and torture my enemies with, "My Heart Will Go On".
Platinium Sorcerer of ALSB,
Aerie
Loving
Sacred
Band! She's MeowRrrr, and more!
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Baldur's Gate Item Mart