looking at this chart from the
wiki:
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dark elf: 25 cha, 5 int/sta
erudite: 25 cha, 5 agi
gnome: 25 cha, 5 int/sta
high elf and human are up in the air. with as little as adding 5 cha to a high elf, you're already matching max cha for a dark elf/gnome. a human only takes 10. so do you want to skyrocket their cha or take their int higher (especially for human, who has the lowest) or even take stamina higher. considering that you only get 2 hp per stamina at level 50 as an enchanter, i'm not actually advocating this choice, just saying the choice is available. as a high elf i would go 25 cha, 5 int. as a human, maybe the same still.