Originally Posted by
underdogba
There is no one best trinket setup for every single fight, optimizing your setup is dependent on the damage input characteristics of any given fight.
---------- Post added 2011-07-19 at 10:32 AM ----------
The Mirror is extremely useful in fights that have predictable burst magic damage. The On Use resistance is actually quite mediocre in the vast majority of "normal" fights where magic damage is maybe 20% of total damage (even fights that you would think are heavy in magic damage are not really much higher than that in reality). Some rough napkin math: the on use comes out to about 20% reduction of 20% damage one-sixth of the time, or approximately 0.66% damage reduction on average - that's good but not so compelling as to make the trinket all that great absent specific applications of the On Use portion. For example pre-4.2 nerf Nef or heroic Nef, where the trinket is arguably mandatory.