Quote Originally Posted by Sarzor View Post
Ones I'd think of:
VON3 - If you do alot of heroic leveling, you get a bunch along the way here already. I think it's 7-ish? Not a farm per se, but along the way of getting xp.
Invaders has a reasonable number and is fast if epic leveling.
Lord of Eyes is pretty good.
Acute delerium has a fair number of respawning beholders. They're mixed in with other mobs though.
HoX has a fair number of them. Go in heroic casual and you should be able to take out a fair number of the respawns?
Delerium - The start has a few boozers.
Subterraine has quite a few, but they're scattered.
Do those little Evil Eyes in Lord of Eyes count as Beholder kills? I am pretty sure they do (I remember getting a monster manual XP reward killing those once) , so if so that might be the best choice.