What I used to do before I used AEs, was use Archery or Throwing, and cycle through targets. With an audio trigger set for You hit, and a cycle through NPCs key (Options - Keys tab) set up, you hardly have to pay attention, and if you're using low delay bow or thrown item, it doesn't take long to cycle through alot of mobs.
Without Weapon Affinity AA, and low delay, and high skill, this is often faster than procs, and is lower aggro, and keeps the toon out of melee range.
Just another option, you may not have thought about.
Yther Ore.