I was wondering if someone was going to post something like this. I've had my 5S for 4 years and am seriously considering "upgrading" to either the SE or 6S. The only things I don't like about my current phone are no WIFI calling (on AT&T at least), I've outgrown 16GB of storage, and it's slow. Both the SE and 6S fix all that while still giving me a headphone jack. I like the price of the SE but I do like the larger screen on the 6S. Hmm....
I went from a 5C to an SE a year ago in the spring, and have been really happy with it from day one. I still use a 4S to serve up audiobooks from a speakerdock so I'm clearly a fan of the smaller form factors in phones. The SE is mine for as long is it holds up and is supported.