Hi, all. Long story short, I'm not exactly in love with the iPhone 6 (and hoping the 6s is better) but need to get a replacement phone already (my iPhone 4 is on its last leg). I plan to buy something now and re-sell when the 6s comes out (i.e., in 6-9 months). My options: -1- A new 5s for $585 (including tax). -2- A "mint" used 5s from Swappa for $425 (or maybe they'll take $400, if I'm lucky). -3- A good condition 5s from Gazelle (they have none in excellent condition) for $380. Which option do you think represents the best deal if I'm planning to sell when the 6s comes out? Thank you.