Literally, there is no "best" case. What are your needs? What is your aesthetic? How clumsy are you?
I make cases, and if you can break your screen with a pink Otterbox on, I'd never recommend one of ours. That said, if you're not juggling Starbucks, or are tired of Tacti-cool, there's options.
The best of anything is so subjective to be meaningless. That's why we settle for second best