Hi, everyone, do you think it is good to do a clean install of iOS 5 on our iPhone 4 instead of simply updating it? Doing a clean install will cost me a lot of time certainly, since I have lots of apps and songs to be synced with my iPhone. But, some said there will be battery drainage issue or a little lag if you directly update the firmware from 4.X to 5.X. Is it true? What is your opinion?