I've got ED-E right now and the extra enemy spot distance is awesome for my character (who is based around sneak sniping).
However, I can never get close enough to see the enemy and fire from stealth before ED-E plays really loud duel music alerting them to my presence.
Maybe the robot secretly has it in for me and wants me to die like the meat-bag I am... but...
I've set him to passive, and he still does it...
Any solutions?