No, I haven't.
I've always tended towards Japanese games and consoles, so I guess I'm not a target-user for Microsoft. I tried with the Xbox 360 on the day (had two of them, an Arcade which Red Lighted and an S, which I just sold because it was gathering dust alongside my PS3 :/), and I liked the console, but --aside from Lost Oddyssey, Tales of Vesperia and the Forza games-- it just didn't have the games to compete with my PS3 and the PC I was building back then. And that's been my only experience with Microsoft.
The Xbox One X is interesting to say the least, but I already own a PS4 Pro and a mid/high-end PC where I can play the few One exclusives there are. Why should I buy a Xbox One X?
Sincerely, I have no reason to. And raw power just won't catch my attention.
If Microsoft didn't release their games also on Windows 10 I'd consider buying one to play the Forza games, but I can get them easyly on my PC, even if I have to stick (for now) to a 1080p30fps performance.
With that into account, I'm just no target-user for this console. And I don't think I'll be in the future.