You are trying to compare three very different speakers, and you haven't told us what you like or don't like about your existing Klipsch Fortes. If you like the Forte sound then the Cornwall IVs would seem to be a no brainer - Fortes on steroids.
The Audio Note J is a very different speaker. Much more polite delicate than the Klipsch and will sound absolutely bass shy, compared to the Cornwall. If you like one I doubt you would like the other, in the same room and with the same music. Maybe an AN-E SPe?
I haven't heard a pair of Auditorium 23 755s for over twenty years so I will not comment.