While we haven't tried all that much CS in Epcot, we did really like the Tangerine Cafe, and we eat quite a bit of Mediterranean. I especially liked that it was the one place I've found other than our regular place here in town that makes pistachio baklava (I hate walnuts). From now on, Tangerine is on our list of regular Epcot food.
I also really liked the England Fish and Chips, but Tangerine had a better variety.