So the concept of the video on iPhone 4 being 720p is great. I just wonder if people here can answer: 1.) how much space will 720p video take on the device? I'm taking a vacation on the 17th of july and I'd like this to replace a camcorder 2.) assuming I don't roam on the phone (said vacation is in philippines) then how much battery life will this kill assuming I don't render video on the device and just record and play back. Perhaps there are users here who can assume the storage needed based on codecs etc... Any ideas?