It's fun to read through this thread, which was started back in 2004. Here are some of my thoughts.
I tend to run very hot or very cold with KJ. To this listener's ear, the good stuff can be INCREDIBLE, mind-blowingly good. On the other hand, many of his recordings don't do anything for me.
If I were to pick a handful of my favorite KJ recordings, the list would include: Shades, Death and the Flower, Treasure Island, and The Survivor's Suite. (Obviously, I like the American Quartet best. How can you go wrong with Dewey, Haden, and Motian?!?!)
I also LOVE Facing You. That said, I'm ambivalent about most of Jarrett's solo recordings. I don't think any of them are anywhere near as interesting as Facing You, although Koln Concert probably comes closest.
I've never been able to find my way into the European Quartet (although, strangely, I love the same rhythm section's recordings with Bobo Stenson -- so my problem isn't with Garbarek). I suppose I like Belonging. But that's it. I just "like" it -- which is disappointing, given how much the American Quartet's recordings have electrified me.
And I've had a similarly tough time enjoying the Standards Trio. I just can't get a foothold -- even though DeJohnette and Peacock are two of my favorite musicians. (I actually prefer Peacock's Tales of Another -- with the exact same line-up -- much more than any of the Standards Trio recordings that I've heard.)
So there you go. One person's totally subjective take on KJ's discography. Make of it what you will!