Given you like what you are getting for the most part via the current speakers... and If you seek to lessen the 'fatigue' factor, I'd recommend a couple or at least one power cord change, and or, one pair of interconnects, rather than exchanging your speakers.
I prefer to tweak, massage, or reconfigure and address what's on hand over replacing good stuff with other good stuff and ignoring perhaps some existing issues that won't be addressed by so doing.
Things might be as simple as addressing reflections with some corner treatments or panels at point of first reflection.
I prefer to tweak, massage, or reconfigure and address what's on hand over replacing good stuff with other good stuff and ignoring perhaps some existing issues that won't be addressed by so doing.
Things might be as simple as addressing reflections with some corner treatments or panels at point of first reflection.