Best Machina spec. for PvE?

[Colaii]

Only talking about the new specs, not the old. Impact or the other one?

[Noctaelius]

Lustre and Impactor are both really good. Impactor will get buff and lustre nerf next update. Impactor is the dps one. Lustre is the Support, she still does a lot of dps even for a support class and can offer uniques buff for the party/team, like ele% dmg % fd% atk spd, mov spd, SA%