What exactly do you want to know?
Which is cheaper? Which has more power? Which is the nicer color? How much does the console weigh?
Generally what is better for gaming. (Price and performance) 👍
There will hardly be any new games for the Series X. But it is apparently backwards compatible. This means you can play games on the Xbox One and partially on the Xbox360. Many at least.
In itself, it is currently not worth spending 500 euro on a new console. There are still some technical flaws. So first of all I would recommend the Xbox one.
In the long term, of course, you'll get more from the Series X. Only good for it, almost no new games
Thank you😊
The Xbox one was a bad console, little performance, few exclusive titles and too expensive, the Series X is better in all respects. It is currently just more expensive and there are still a few games because it has just come out. In the long run you will be happier with the Series X because you will also be able to play all Xbox one / 360 / Classic games on the Series X.