I havent had much luck with trinket drops ever, but recently got Vengeance of the Forsaken. However, since I was already expertise capped without it, it becomes unclear which trinket is actually better.
I spent 10 mins on the dummy with both Trinkets and Vengeance of the Forsaken was 200dps better. However, dummy numbers without raid buff etc, tends to be an unrealiable guage.
Maxdps.com says its the better trinket.
However, RAWR shows the Mirror is the better item. And since Im already expertise capped the 83 expertise is wasted from the Forsaken trink.
Further wouldnt a the proc of 1000ap every 45secs lasting 10 secs, be better than a trink on USE for 1075 AP every 2mins lasting 20secs?