A lot of people don't like playing ES until level 12 because it's a pretty lame tree until you get the second burst. In addition to the second burst, at level 12 you have Shining Through, which functions as a big part of self healing. I enjoy playing ES, so will switch to ES as soon as level 9 when I have enough action points to get medium armor proficiency, Brilliance as well as Stanch from TS, which is also a big part of self healing. I do use a lot of healing wands and scrolls during heroics. Up to level 9, I prefer to focus on TS, using chain shape and TS also has wand and scroll mastery, which is really nice during heroic reaper questing to get 75% more healing from wands and scrolls.
Hope that helps
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