I've purchased two cases. I found out about them from articles on the net. The first, on Amazon, is by Ferilinso. It's all clear, soft TPU material. It's light and has thick corners for drop protection. I like it, but for the price of the phone I wanted something more substantial.
Second is by dBrand. It is much more solid and gives more protection, IMO. It claims military drop protection. You can also add skins to it to change the look. It's solid, black with textured sides all around. It won't slip out of your hand. The buttons have a solid feel and there are two buttons for the volume. It is heavy and I'm using it because I feel my phone is more protected. I'm waiting for my screen protector to be delivered to see how they fit together. FedEx misplaced it.