Just got Sky Inheritors ring box, which should I go after as Ligtning Sin?

[BabyKurama]

Title
Should I go after Skyshatter ring or Inheritor's Ring?

 

My gear:

[Dlacik]

One of them is PvP the other is PvE. I think the Skyshatter is PvP but i can't check it right now.

[Grimoir]

Inheritor, but still if you have a chance to get the skybreak Spire lightning ring get it its superior than inheritor