Hey guys! Let me start by saying, I am an iPhone collector! There is NO way I'd use a 3Gs! Lol too slow Anyways, I like to play with it from time to time, and it keeps asking me to update to iOS 6. Its currently running iOS 5. So, should I update? Will it affect any future retail value (if any! Lol)? Will it run slower? Any advice would be great!