I've been looking for a case for my shuffle for a while. I've seen the Crystal Jacket recently, but haven't heard any reviews on it. Basically, I want something that can pretty much fully protect it so I can throw it in my bookbag, yet allows me to operate it while in the case and take off the cap (lanyard compatible, ideally) to connect to a computer. I'm not incredibly fond of the basic silicone cases or colored skins, but am open to them if they're of good quality and do what I need. Other's I've looked at include the Tunewear Icewear, Power Support Silicone Jacket, Capdase "Metal" case, and of course Apple's Sport Case. Anyone have any experience with the Crystal Jacket or any of the above cases, or have another to recommend?