I want to get the 64gb 4S, but I need to get AppleCare because my 3GS lasted about a year and a half then I was told tough luck and I don't want to have to deal with the same thing. Can I purchase AppleCare at a later date or does it need to be purchased with the phone at time of sale? And is AppleCare+ really worth it? I mean, it's $100, but if your phone breaks, you have to pay $50 so if it breaks twice, that's already $200 you have spent. Just doesn't seem worth it, but maybe I'm wrong.