Speck Presidio Clear Case
Speck is another trusted name when it comes to cases. They're one of the number 1 selling brands for the iPhone, and in most carrier retail stores. All of their cases are certified and in the "Designed for Samsung" program. Meaning they worked with Samsung for a precise fit and optimal experience.
The Presidio Clear case is similar to their popular "Grip" line, except it's perfectly smooth and completely clear. It still has a textured inner shell to disperse force from drops or damage, and is military-grade drop certified up to 10ft. So your phone will almost certainly be completely safe even if you toss it, using this clear case.
It's a little expensive, but comes from a great brand that is trusted and approved.