It is so easy to overthink these things. In the end, they are both amazing pieces, and you cannot go wrong either way.
That said, I think the GMT, especially on a bracelet, is just a little easier to wear in more situations, as the chrono seems a litle more like a tool watch, but that is just my opinion. I also find the GMT a more useful function than the chrono if you travel. Again, just my opinion. Look forward to seeing what you choose.
respo