I'm in the process of picking out meta gems for my T4 Helm and hopefully my Merciless Gladiator's Helm as well. I would think that logically the best choice for PvE would be the +3% crit damage and the best one for PvP would be chance to stun target. Does anyone have any input or suggestions or experience with the chance on hit to stun gem?
By the by, I get movement speed on my boots. I have a pair of Edgewalker Longboots right now with Cat's Swiftness but when I eventually get the boots from BGs I'll probably get Boar's Speed, negating the need for the run speed Meta Gem.