Choosing between a balanced set of gems?
I'm currently rocking 13 expertise in my default tanking set. Most of the gemming is 8 def/12 stam, with a few 24 stamina gems throw in for some socket bonuses/meta.
Sitting at 543 defense rating (shield isn't enchanted yet), and I'm debating replacing 4 of the 8 def/12 stamina gems in for expertise/stamina, mainly because of the red sockets. Would losing the extra avoidance/mitigation of 32 defense rating be a worthy trade off for 32 expertise? Thoughts?
Expertise is still technically an avoidance stat. The thing is, you don't really "need" anything as far as survivability and threat, aside from stamina for a few select fights.
Personally, I gem for stamina in all sockets still.
I would use expertise/stamina in any red socket. As long as you are at a point where tanking is not like playing Russian roulette.