I got 2 helm drops last night. First two Orange items. Shamir and Kalas. One is +4 crit like the Grunil I have on. The other is - crit but 4 more Base CP.

Wondering what people would use. How big is 4 Base CP? And moving forward, are people using all of the highest CP gear pieces and then trying to max crit and attack Speed w gems etc?

Use the kalas, sell the shamir. You get more positive effects having higher crit chance than just 4 cp

its more then 4 cp when you enchance it to lvl 35..also crit is capped at 30%.. so go for high cp..