I wasn’t a big fan of her New 52 run either. If you want her at her best, check out her run by Greg Rucka. It’s on DC Universe under the Detective Comics banner.
For other books outside the app, I’d look at her in the Rebirth era. Her most recent ongoing was far stronger, and she plays a big role in James Tynion’s run of Detective Comics, where she co-leads with Batman training the youngest members of the Bat-Family.