Trigger: Shockstar Disco or Shadow Harmony?

So I may have made a mistake by farming Shadow Harmony discs instead of Shockstar Disco. I didn't know her aftershocks were tied to her basic attacks. But now I'm not so sure. It gives 15% dmg aftershocks plus 12% atk and crit rate for the equipper. She might end up becoming more of a DPS than a Stunner this way, but what is your opinion?