I really dig the colour now.. at first I was kind of iffy about it, but the more I see it, the more I like it! 😀 one question though: are the earphones bundled with your X some regular ones or are those the high res audio ones with noise cancellation?
In ur upcoming Xperia X review dont forget to test the flashlight brightness. Flashlight of M5 is very bright. See if Xperia X got same flashlight or not. Also check if it has got Camera app heating problem.