I have been having a hard time deciding which meta to put in my engineering helm, the 54 crit/3% more crit dmg one, or the 54 mastery/run speed increase one. Normally I'd go with the crit one, but its requirement is that you have more blue gems than red gems....which is really counterintuitive for a dps class. The mastery one had pretty easy requirements, it was like one yellow and one blue I think. So, the crit one would probably do more damage on its own, but at the sacrifice of having to use blue hybrid gems. The mastery gem is probably a bit behind the crit one, but it won't create a nightmare of having to constantly make sure your blue gem count is high enough when you get a new item. Which meta will you guys be using?