Seekers Archive, Spellscar, and Elinhir are popular. Although they are best to run in a group because you can split up and share quest objectives, letting you do them faster. Spellscar is probably quickest and easiest to solo.
2 dailies near Valley of Scars wayshrine- one quest giver just north from WS, second a little bit to the west, down the road). You only recive green coffee for each, but they are both in one area, they are stupid easy and after u know best route they take like 5-10 min to complete both