Best stats including bonus magic resist is found on erudite.
Two good racial abilities on gnomes(looking through walls)and dark elves, who can hide.
The way most wizards solo, the hide ability will be far more useful make it safer to AFK between kills. Wizards rarely try soloing in dungeons where looking through walls is more useful. They also lack any lull abilities which you don't need line of sight for.
You will be night blind on an erudite for awhile, so that is something to keep in mind.
I think they are all about equally good depending on the criteria you want to include.
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