I think all servers besides Delteria need some quests.
Not iEra's "Bring item to person, talk to another person, kill some baddies, find secret place." dealio.
I'm talking real, creative quests that have some actual purpose to them.
So far, Delteria has somewhat of a legitimate storyline, iEra only has holiday quests, iClassic has some cash quests, and Zone only has 1 quest that I know of.
If all servers had some sense of direction, I'm sure people would have better opinions on these servers.
However I'm still holding on strongly that Zone has to be the best of all 4 servers so far.
The balance of power is likely to shift during the next few years.