I'm new to HeadFi and i'm looking to buy a portable AMP to use for my computer and my ipod/ipad/iphone gear. Anyone know any good ones? I was looking at the FiiO E11 and the E6, but I hear the E11 is better. If I were to buy the E11, how would I carry it around with my iPod? Is there like velcro or rubberband-esque attachments to keep it on the iPod? Let me know how you guys do it and if you have recommendations. Thanks!