I main an erudite enchanter, and if you've decided on Enchanter then Erudite is a good choice; the only stats that really matter are INT and CHA, and Erudites have the highest total (add 25 CHA, 5 INT at creation):
Code:
Dark Elf: 114 + 95 = 209
Erudite: 122 + 105 = 227
Gnome: 113 + 95 = 208
High Elf: 107 + 115 = 222
Human: 90 + 110 = 200
This assumes that you want to play an enchanter. It's a late-blooming class, with a lot of core functionality not maturing until the mid 40's (and some components not until near 60). Some people will prefer Magician gameplay over Enchanter, and for good reason, so I'd encourage considering Magician unless you're absolutely sure you like the Enchanter style. Erudites make excellent Magicians as well. (But if you decide on Necro, then Iksar wins out over Erudite. And don't count out gnome for mage/wiz for wallvision.)
(Note that high elves deserve an honorable mention for second place because high-end enchanter gear tends to have too much INT.)