Chakra or Shield Mastery?

Well, i'm 109 now, and i've maxed out all CB skills excluding Pickpocket, Chakra, and Shield Mastery. Of course i'm gonna max Pickpocket, by then i'll be 114. I was wondering what to add next - I mean, many guides say to add Chakra, though i cant understand why. Its helpful, yes, but its not like u're gonna use it every time cos u have to wait for it to heal u. As for Shield Mastery, well, i dunno, but it doesnt seem to be that popular.

So, Chakra or Shield Mastery? :f6: