I am planning on getting one of these battery cases for my iPhone 3GS, I've read a lot of reviews about Mophie JPA and Mili Skin Power but still need some comments from you guys to go for the right choice. Which one would you guys go for and why's that? Let's make it like a vote for the right product here!!! I don't mind about the thinness and thickness of these 2 cases, as long as which one is suitable, durable, easy to sync and handy then I will go for it. I read one of those problem with the Mili with OS 3.1.3 here - http://forums.macrumors.com/showthread.php?p=9813572#post9813572 - Does this happen the same with the Mophie? Thank you guys!!!!