You know what's satisfying?
Let's say you're investigating an aggravated battery, and you've got your main offender in custody. You get your second offender identified pretty quickly, and you decide to grab a bite to eat at your local taco stand before driving the first offender to the juvenile detention center.
The satisfying part comes when, just a few minutes after you've finished your meal, your second offender walks into the restaurant with his mom, uncle, older brother and younger sisters.
The even more satisfying part comes when mom, who insists on coming into the station with you and sitting right with junior as he's interviewed, allows her kid to make a written statement outlining his role in the beating. And then you get to drive two little rat bastard gang members to jail at the same time.