My wife is going to be upgrading her iPhone soon (she has a 4s)- not sure if she will get the 5s or the 6. I'm wondering how much do you think the value of the 4s will drop once the announcement of the 6 is made (likely this September). Do you think it might drop $50? I'm trying to figure out the best time to make the switch for her- as right now you can get a 5s $100 off. If Apple does come out with 2 versions again (the 4.6 and the 5.5 in screen), I could see them making the 5c the free phone and dropping the 5s like they did with the 5. Would you just wait and see how the cards fall in a couple of months or make the move now if she knows she is going to go with the 5s? Thanks for the advice.