I use a 64 now and with no music and minimal apps I have about 30gb remaining(i basically have every photo I have taken since the first iPhone on my phone), I was all set to order another 64 until I read a thread here about 4k and live photo's being very big files. As a moderate photo/video user I'm thinking about just going with the 128 to play it safe. Anyone else in the same boat? Even though I upgrade every year I don't want to short change myself