I have the apple leather case, apple silicone case and otterbox symmetry & defender. I've recently (1month) have been rocking my iPhone 7 naked. I like it but sometimes I feel scared I'm going to drop it and break it.
I have several cases, including an Otterbox Commuter, two Apple cases (one leather, one silicone), and many others. I love my brown Apple leather case-I think it may be my favorite. It offers minimal protection, but I am very careful with my phone (and it looks great). I am currently using it.
I have used all that you have stated and then some. I choose to go with the cases in the end. Here is why. The leather cases are just classy and have such a fine feel and texture to themselves, while the silicone case have the softest feel of any case on the market. The biggest feature that I have not found in a third party case (doesn't mean that they don't exist) is they do not have a microfibre lining like the cases do. This is what ultimately made me decide to stick with cases. I like the added protection inside. I currently have almost every Apple leather and silicone case that is sold by .