I guess you can say I'm a 'case whore' since I keep buying more and more as they come out in the vain attempt to get that 'perfect' case. And so far, I've used Sena' Ultra Slim Pouch
http://www.senacases.com/Brands/Appl...LTRASLIM-POUCH), Power Support's Crystal Jacket (
http://www.powersupportusa.com/products/iphone.php), and Agent18's Clear Eco Shield (
http://www.agent18.com/scripts/prodv...roductpages=16) with Power Support's Anti-glare film. So far the later was the best combo, although I agree that the EcoShield can and will lightly scratch the iPhone's chrome bezel if you slide it in or out while there's light dusting on there. I have avoided this by applying a piece of mylar tape I cutout myself onto the bezel before putting in the EcoShield.
And, just recently, I went ahead and got another case from SwitchEasy
called the Capsule (
http://switcheasy.com/iPhone.htm). It is very similar to in form to the Agent18 EcoShield case except that it prolly won't scratch the chrome bezel because of the way the case slips in. Also, the case comes with a non-adhesive screen protector (3-designs) that even covers the home button. In my opinion, this lessens the tactile feedback of the home button and since the screen protector is not adhered to the iPhone's glass surface, the sensitivity of the touch screen is somewhat compromised, plus, you know dust is going to find it's way between the screen and that film! But since I liked the case itself (I got the white one), I still use it without the included protectors and use the PowerSupport anti-glare film instead (
http://www.powersupportusa.com/produ..._antiglare.php). Lastly, the SwitchEasy Capsule case comes with several accessories such as a universal dock adaptor (which works great with Apple's Universal Dock only, and not with the dock that came with the iPhone), a headphone jack extender and a cover for the power port.
Hope this helps!