Quote Originally Posted by Alkibiades14 View Post
Ah. My understanding, which I'm by no means sure is correct, had been that X is simply an aspirated kappa--in which case it seemed, to me, anyway, more natural to use "kh," to specify that it is not a fricative. Of course, I'd defer to you guys on that, but it struck me as odd when I saw "ch" in-game.
You're right to think as you do. From what little understanding I do have of Greek as it stands today, your orthographic X would (at least usually) be pronounced as a voiceless velar stop, and in the case of Greek you're probably right in that it's aspirated as in the 'k' in kite, not unaspirated as the 'k' in sky.