Depends. Personally, I do dungeons. The DPS queues have slowed since release, a lot. Healers can just spam dungeons, tanks can to to a lesser extent. You can mix in fates during queue times to get exp, and complete the shared fate zones to unlock further rewards.

Quote Originally Posted by Hatstand View Post
Deep dungeons are very fast.
Even at below 70 they are not, regular dungeons are faster with the 30% earring, but as a DPS unless you have a healer or something to queue with, they are probably your best best at those levels.