What's the best iPhone 4 case?

Just got an iPhone and right now I have a Lifeproof from ebay that was only about 35 dollars, it came in the case and has logos so I think it's real. But I hate it, I can't hear anything and it's already chipped.

I'm looking for a new one, probably on ebay or amazon. I was thinking an Otterbox Defender but it's extremely bulky while the Commuter doesn't look strong enough. However I do need shock protection.

Then Speck has this one, it's cheap, cute, but I'm scared of it's durability.
http://www.ebay.com/...1438.l2649

And then these charger ones look good, they have shock protection and it charges, but if any of you haven't had luck with the portable charging case please let me know. I always have a low batter so that's a plus.

http://www.ebay.com/...1438.l2649

http://www.ebay.com/...1438.l2649

Or any other cases of this type thats durable and a little stylish.

I think the third one is fine, it's shockproof, not only can protect your phone well, but also can be a charger.

I also find a cool one on dx, http://dx.com/...een-147641, stylish and protective.

You can find a variety of designs and themes for iPhone cases at http://www.custom-iphone-cases.com. They can be personalized or customized to suit your needs. They all have cutouts so that you still have access to ports/charging etc… When in the case.