I'll have to agree. I got a candyshell flip back in march and I have dropped it a quite a few times and there are no blemishes on my iPhone. I like it a lot because of the flip option and it's easy to get my phone out to give it a good cleaning.
I think iPhone case should be pretty and practical, here is a case that meets your needs but I doubt that if you will buy it as the clothes of your iPhone waterproof, dustproof, anti-shock but extremely ugly, will you accept it? So I prefer beautiful cases because I will take good care of my iPhone.
I just bought an Otterbox defender for the first time. Popped out the included screen saver( it felt like a diaper..lol) anyway. It has great grip and I just today through it across the cooler (concrete floor) today to show a fellow worker the drop protection. The phone never missed a beat. It is slightly bulky. But not seriously so. And like I said the grip on it is great!!