there's a better ring, remember to take agility scaling into account. angelistas revenge or ban of eeternal champion are better.
dunno why so many rogues use engi head with 126 agility instead of swp helmet with 3% crit dmg and dont use the 4 set bonus of t6. Gives you a higher burst than ~100ap
Joaho @ Defias Brotherhood - RNG Gaming probably got the most ap (4482 AP)
Joaho @ Defias Brotherhood - Game Guide - World of Warcraft