As some might know, I returned my 6s+ and got a refund because I had some display issues.
Now I'm waiting for the ordered se to be delivered mid may. I'm currently using an old Galaxy s2 with a 4.3" display with poor ppi and I got to admit that the displaysize is quite small for web browsing.. When I'm home, I use my air 2 more often ( I planned that) than when I had the 6s+. nevertheless I still kind of miss the big screen right now and don't like the thought of having given up the most high end iPhone currently available.
I calculated that I will effectively pay about 200€ for the se, coz I sold my 5s before getting the 6s. I plan to get care+ for 99€ additionally (299€ In total for se with 2years care+).
If i pay up to 250€ more I could get the + with 64gb or the 6s with 128gb for 400-450€ in total without care+, I wouldn't get care + with any 6s because that's to much then for me.
I'm not sure what to do considering I want to have a phone which I can use For at least 2 years.
I used my 5s for 1.5 years before selling it and getting the 6s. I later got the 6s + from Apple for free and now returned it. I'm not sure if I can live with the small screen and same design of the se for another 2 years.
Get a 6S. It's a nice in between size in terms of screen size and better future proofing when compared to the SE.