What's a safe iphone case besides the otterbox?

I'm clumsy and drop my phone alot. I own the otterbox, which is a tank, and has helped me numerous times, but I have come to accept that the otterbox ruins iphone aesthetics, so I'm looking for a less bulky case that will still provide reasonable protection against occasional drops out of my hand etc. Some of the cases my friends have are so thin I worry it won't do anything.

You can try a Pelican hard case, they are covered by a lifetime warranty, also come in many sizes and colors, some even have headphone jacks, here is the website where I bought my Pelican case
https://www.pelicanproducts.us/c.Pelican.Micro.Cases.html

I think the metal case is the most protective case for iphone, and would not make your iphone look too bulky. Like this one, retail price of $19.20, go and see?
http://www.tvc-mall.com/details/Baking-Painting-Metal-Case-Cover-for-iPhone-4-4S-White-IPHONE4S-5218A/
Or this Snap-on Brushed Aluminum case
http://www.tvc-mall.com/details/Snap-on-Brushed-Aluminum-Metal-Hard-Cover-for-iPhone-4-4S-Pink-IPHONE4S-5167G/

Aha, a tank, you are so exaggerate! You want to show the slim iphone profile, yes?
Here is a Skull Bumper frame case with Back/front Sticker. Actually I'm also careless with my iphone and drop it alot. Thanks to this good case my iphone is still survive.
http://www.case2case.net/tunewear-poptune-bumper-frame-for-iphone-4s-4-with-front-back-sticker-skull-turquoise.html

Speck CandyShell Grip Case for iPod touch 4G (Black/white) are the best all around. They fit tight. They look great. Look for a good deal or pay full price for the color you want. Either way you will love it.
http://www.amazon.com/...00433SP9S/

You can try the website: www.onecase.co.uk. I found the other day, there are many cute and practical cases for all kinds of iphone and ipad. You can have a try!