I just need a dart, who w
Joon, If you want high titans damage Joon is the hero you want.
Delilah if you lack healers or for PvP defense purposes.
Joon is fantastic, but so is Delilah. AW favors healers, and Delilah is a healer. All other things you do in E&P neither favor attackers or healers, generally. AW has tipped the balance, so I would go with D.
Looking at the list you posted I feel you are good with attackers for now. Both rock (I only have D). You can not make a bad choice here.