Dell U2715 vs HP Z27n G2

I got both of them from Amazon and can't really tell which one to pick.
I mostly use it for office/coding and MOOCs. I prefer to have one of these. I went through all the tech specs and both are similar in most aspects expect the availability of the ports in Dell (which is not a real need for me).

I love using two 27" but I guess the desk space being a bummer for me, I prefer using my 15" laptop + 27" monitor at my home setup.

Any thoughts?