I'm not counting in the named elites but the ones that are packed for grinding. (This is a work in progress and subject to constant updating)

EDIT: as of now (1.05 patch) the xp elites give has been drastically nerfed to the point that if you have a perfect group of perfect playing and perfect geared people you get almost or equal xp as solo grinding. The drops and elite quest xp (IF you happen to have a quest there anyway) make it worthwile but only for the duration of the quest. Fast xp grinding through elites is no more...

Asmodian:

Ishalgen: http://aionmaps.vnemesis.com/images/...e/ishalgen.jpg
none (except the named ones and they aren't for grinding)

Morheim: http://aionmaps.vnemesis.com/images/...ae/morheim.jpg
Lava Caverns of Talan for lvl26+ very good area for groups of 22+ elite pulls are 1 and 2s if you know what you are doing
Ice claw village for lvl27+ good area for L26+ sometimes a bit messy but pulls are 1-4 with few bosses in here
Sky temple of Archonis for lvl34+ just stay about this area until 32-33 unless you need rift, you can fly in this area
Fire Temple for 35ish Elites: Fire Temple - Aionopedia.com - An Aion: The Tower of Eternity Wiki
Mist Mane Village for lvl 36 - 40 Elites

Altgard: http://aionmaps.vnemesis.com/images/...ae/altgard.jpg
The Black claw outpost for lvl 16-21


Elyos:

Poeta: http://aionmaps.vnemesis.com/images/...ysea/poeta.jpg
none (except the named ones and they aren't for grinding)

Verteron: http://aionmaps.vnemesis.com/images/...a/verteron.jpg
Tursin Outpost/Garrison for lvl16-21

Eltnen: http://aionmaps.vnemesis.com/images/...sea/eltnen.jpg
Eracus Underground Temple for 30ish Elites
Fire Temple for 35ish Elites: Fire Temple - Aionopedia.com - An Aion: The Tower of Eternity Wiki
Kaidan Mine for lvl28+
Kaidan Headquarters

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