Just pontificating a bit here: had iPhones 5 - a 32GB and a 64GB. I replaced them with iPhones 6. Initially listed both on CL with the 32 at $250 and the 64 at $330. Got tons of offers for the 32gb at that price, but cannot even get an offer of $300 for the 64gb model. So, it seems like when it comes to resale value, there's little to be gained if you buy the top-of-the-line model. Looks like I'll be selling it for maybe $20 above the price of the 32GB model.