When I first received my Mophie Juice Pack Air (JPA), it was in a brown cardboard box with a large recycle sign on it reminding me that this packaging was environmentally friendly. At first glance, I was unimpressed with new charging pack as I already had the PowerSlide from InCase. The JPA is definently smaller in thickness and height compared to the PowerSlide. The JPA has a glossy sheen to like the iPhone 3g does, thus making it very easy to lose grip of...I think I will remedy this shortly. The PowerSlide has speaker holes at the bottom for sound to pass through, while the JPA has a small gap at the bottonm where the charging dock is. I feared that this would affect the sound level when laying the device face down, but so far, I cannot really discren a noticeable decrease. The holes for access to the power, volume, and ringer switch are smaller on the JPA. You have to put a little more effore into finding and pushing the buttons. (This could also be because it is my first day with it. One thing that I like with the JPA is that the fit of the case does not mess with my screen protector. (On the PowerSlide the upper case's bezel cover slightly skews my screen protector casing an air bubble or two to appear.) The last thing that suprised me was when I plugged in the included micro-USB plug into my computer. (On the PowerSlide you had the hold the button down on the back for so long and do this and that inorder to get it to sync with it on.) Now I liked the mini-USB of the PowerSlide, the micro-USB is a little harder for to line up and get plugged in with a little effort. Unlike the PowerSlide, the JPA immediately passes through the connection to the iPhone and syncing begins. BIG THUMBS UP!!! In the end, I have decided that I do love my new white JPA from Mophie and gave the PowerSilde to my "always forgets to charger her phone" wife.