Everything about the juice pack plus is great but just beware that the case partially blocks the flash of the iPhone 4 or 4S and therefore gets you totally washed out white pictures if you're using the flash. I almost never use it, so it wasn't a big deal to me. It is a pretty big design flaw though. Just because the LED itself isn't covered by the case doesn't mean that the light isn't going to reflect back into the lens. I contacted mophie about it- they said they'll send you a free replacement.... but the replace has the exact same design, so not sure what the point of that is.
bottom line- your flash is useless with this case, but everything else is awesome.