I went with the d30 Holborn. I used to use the speck Presidio and dbrand grip for my s9. The Holborn is the most incredible case I've used. It's super sleek and thin. Haven't tried to drop it yet, but apparently the d30 material protects it really well.
Only con I can think of it's that it's actually pretty heavy compared to other cases, but my s20 feels like an armored tank and it isn't bulky at all. It's really REALLY slim.