In my opinion, I like Era out of all the servers. Classic is ok gamewise, just isn't my type of game. Zone is also not bad, but I can't say I enjoy it enough to stay - I have like 50 hours and all I do are missions, fishing, and picking up parts. Delteria, oh god how it's gone downhill. Once you hit level 25 it's pretty boring, they probably raised the max level. I don't know, haven't played it for awhile. The jobs are terrible, they used to be good. Only place you could sell fish was the big market. I haven't played for awhile so maybe it's improved, but definitely not going back even if it ever does come out on ios.