after a weekend of boosting I have a Pally, Priest, Mage and Shaman to lvl58. Now the hard question comes in; Who should be my fifth team member? Originally, I was thinking a second Mage but wanted to open it up to discussion as another Shaman could also be good.

most of my play will be instances and pve. I like the dps of the mage as well as the CC and polymorph. The shaman brings 2xreincarnation (handy for instances) and some nice dps as well. Thoughts?