Received my 5x 10 days ago, and I'm still struggling whether or not to keep it...
Display on the Moto X is much better IMO. Especially side by side, its no comparison. Colors are vivid, eye catching. Things just look better. The contrast with pure black makes the washed out gray blacks on the 5x look antiquated.
The speaker on the Moto X is much better. Bassy, lots of punch. The 5x speaker is terrible in comparison.
Battery life is pretty much identical. 4 hr SOT average from both over 12-14 hours.
Everyday operation speed is identical. Apps loading, actions etc. Scrolling web pages much smoother on the Moto X.
5x has a much better camera. Fingerprint reader is a huge convenience. Updates, and Project Fi are the reasons I'm having so much trouble deciding...