I’ve had every model from the 3GS until my current 5S. I’m always one generation behind, second hand no less
5S is still my fave so far, the size is just right for me to operate with one hand + Touch ID. My partner’s work phone is a 6, although the size is slightly too big for me to use with one hand, wouldn’t mind upgrading if there’s one within my budget. Not fussed really, still lovin’ the 5S