Just on battery issues (again):
Were there similar issues with the S2 in the early days?
I read somewhere that the "Cell Standby" consuming battery is a fault with the S3 that may be sorted with a firmware update from Samsung at some stage.
It's this standby that's consuming most of my battery, rather than browsing of screen. It's basically on all the time, but can it be switched off, or has it to be left alone?
I've installed Juice Defender on the "balanced" profile, so hopefully that will help.