Hi, I am planning to upgrade from 4s to 5s. I have AT&T. With the iPhone 6 coming out, is now a good time to do it? Have the prices on 5s models dropped already? If I should wait, what is the date by which I can expect the 5s price to bottom out for the near future? Also, my data plan currently is some mobile sharing plan where basically I buy the phone myself, either on my own or via AT&T at a flat monthly rate (AT&T next I think). In order to get the best overall price on the new phone, and save the most money, should I A) take my old 4s (in perfect condition) to the apple store and trade in to get the 5s from them, or B) should I sell it on my own (have a $113.00 quote from usell.com, valid for a few more weeks) and get the new phone from AT&T store. What would you all recommend? Thanks a lot.