Oxades

I have been running my Inv/SS tank with a taunt enhancement in both jab and haymaker. I gust made level 18 and now have invincible and was wondering if I should keep them slotted with taunt or if I should replace them with something else?

I have a lvl 26 Eng/Eng blaster using hover as my def. I was wondering if tacking combat jumping for added def is worth tacking, particularly for the immobilization Res.