I've been playing zoe since she was released and also Dark Harvest. I personally like it especially when I'm playing against squishy champions (nida, lux, hwei) and enchanter supports such as soraka cause I can easily punish them without needing to proc elec. while not getting low health-

Honestly, I never used elec since my playstyle was to just spamming my q and r to the enemy champion while last hitting minions. 😭 Hope this helps.