I picked up the 16 in June and have used it a ton from weddings to family stuff. Everything that's been said regarding build and performance are on point.
One thing I truly love about it is the clutch manual focus override. During receptions I set the 16 to manual focus and I live around f/2 to around f/4 or 5.6 and zone focus with peak for the dance floor. Super fast!
I also really love the close focus ability. Ring shots and details are great with it.
A few examples from details, family and weddings: