An Apple store employee told me he likes the Apple case for his own phone. When I said "but what about the exposed bottom on those?" he said the increased risk was worth it to him because the speaker is louder/better in exposed bottom cases. Is this true? Is decreased speaker quality an inevitable price one pays for increased protection, and that if you really want your phone loud and clear, skip any sort of case with bottom covered, even though they generally have cut outs for the speaker?