Are ATC Triple Defender iPhone 4s cases any good?

I want to buy this phone case http://www.amazon.com/...008PLRT1Y/ because it is easier to use than the Lifeproof iPhone cases and easier to fit in my pocket. Are they any good? I drop my phone frequently and like to dock my phone plus listen to music. If this isn't any good, could you please suggest another case that I could buy? $20 is the most that I want to spend on a case. It has to be a sleek case with great protection.

Worst. Phone cases. EVER.