A wizard will always, always, run out of spells before the sorcerer. The sorcerer simply has a greater of spells per day. The advantage the wizard holds is variety of spells -- option, not frequency. Consequently, in an unprepared encounter, the sorcerer will fare a lot better. Say, you're facing a group of fire elementals. The wizard has memorized only fire-based spells that would be useless, but the sorcerer has access to all her offensive spells -- acid, electrical, or cold-based alike.
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Since I have not played as wizard yet I don´t know much. If things are as you say so, then you are right. Sorc is better. I am glad I choose her.
Why bother? Just bludgeon/bash the doors into piles of wood. I usually go with a panther familiar, because it can dish out almost as much damage as a rogue of comparable level. Although, in high-level game, it does become useless and is just one more canon fodder.
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Exmmm for the fun of it perhaps? My familiar is a fairy. And she is doing a great job with traps too.
The robes change. You also get the obvious -- more prestige classes, more types of weaponry (see whip), etc.
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The robes are cool indeed. Especaly the one I gained from the guild I have joined in.
