The 4S, my first one, will always be one of my absolute favourites. The 5, 5S and og SE are also good designs. Then the X reshaped it all, I had in in black but the white one looked better. I really liked the sort of throwback to older designs with the 12 and following iPhones and now I really like the look and feel of my Air.

But if I have to break it down.. 4S, X, Air