I bought my 4s in July, 2012, and I have been using it for more than a year. After switching from iOS 6 to iOS 7, it really drives me crazy that 4s is not smooth enough to use. Comparing to 5s, it's thick and heavy with only 3.5 screen, which I think is not fashionable at all. I especially love the gold model of 5s. I'm coming to US next week, and I'm wondering whether I should buy a 5s. It's rumoured that iPhone 6 has a bigger screen, a thinner model and a much better camera, and some people said, as I quote, "iPhone 6 is revolutionary as iPhone 4 is back that time". So should I pick up a 5s in apple store next week, or wait for 3 months or even 9 months? Please help me. Thank you so much!