Therta or Aglaea?

(Idk if I used the right flair for this)

Who should I pull for on their reruns? I personally like both characters lore-wise, though I do like aglaea a bit more. It's just that I don't really have any dedicated main DPS for both of their elements right now, so I'm debating between both of them. I'm f2p so pulling for both isn't an option for me, and I'm also planning on pulling for phainon and preservation dh once they come out :,)

Would really appreciate if anyone can help me decide, thanks!