I've seen numerous posts in random places about how to set up a WYSIWYG editor for Drupal 6. I've had luck with CKEditor and FCKEditor via the WYSIWYG Drupal module. All is well there, but I hit a breaking point when I try to add on syntax highlighting and image upload functionality. Any procedure I try is very cumbersome and ends up not working (the last one I tried was using CKEditor + WYSIWYG + GeSHi Filter (with the hack) (described here).
I can't get any combination to work properly so far and there are too many variables/combinations to try. Does anybody have experience with a solution that just works without too much hassle?