Can someone help me find a case? I need one that is as slim as possible.(Most Important) Protects the back of my iPod (front is relatively safe from scratches). And is hard. Cause the back of my iPod can bend (a tiny bit), and gets stuck on one of the internal hardware, and makes an unpleasant sound.I have a silicon one and my iPod makes the sound in it. Edit: I'm thinking of either CapsuleTouch or invisible Sheild right now. Does invisible Sheild leave bubbles?