The Xbone is a garbage system with an os and ui so hilariously bad it would be funny if it wasn't, in fact, so terrible.
The controller is magnificent, that's about all the good I can say about it right now. In a year or so I'd assume they'll have most of the standout stupid ui/os features fixed, but the fact that they shipped it in this condition blows my mind.
No issue with the games (barring that they've all crashed on me, woo, next gen gaming), just the system itself.
Kinect is gimmicky and half baked, and the inability to selectively turn off voice commands in multiplayer is plain stupid. Having bing pop up mid match while you stand in front of someone like a dope is a fun new way to get next gen angry! As with the ui, I expect the voice recognition and options will be gradually improved.
I'm indifferent to the hardware disparity, I'll be picking up a ps4 at some point and all my multiplatform titles will probably be on the ps4.
Don't regret it, but I certainly wouldn't recommend anyone buy one unless they can't live without Titanfall.