I had X9k over the week at home - my wife and kids decided it is not better than 009 and 007 mk1.
The lack of impact and energy in bass region was the problem for them, not imaging.
Personaly I liked them, but didn't feel like this is my cup of tea.
In my opinion they are very different to 009, are little closer to my Omega with 007Mk1 drivers.
Would be nice to have them in collection and try them with different amplifiers, but after all I abandoned that idea.