before you buy new, do yourself a big favor and buy a sound pressure level meter. I did, it’s my latest ’you ought to do this’ kick.
Pro friends used theirs in my space twice years ago, then took them away. I used my ears since then. Changed back to former speakers since then.
I FINALLY bought my own! Wish I had done it years ago. gives you real answers about your speaker’s output, in THAT space at _____? Location, when they are positioned ___", when they are toed-in ____?, when they are tilted back a bit to change the angle of reflections off now non-parallel surfaces, ...
IOW, you will find the best combo you can get with those speakers in your space.
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After gaining answers/best existing, consider what speaker could be better, do your search informed.
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I realized, I don’t need a pro quality meter, just one that shows bands of output relative to adjacent bands, they have instructions to calibrate ’actual’ level, all I wanted to know was frequency balance ’received’ at my listening position. Get one with a hole for a tripod, set it up seated ear level, start with setup 'as is', then take your time messing about bit by bit
I use this test cd with specific 1/3 octave bands, so easy
That size space, I suspect you are listening too close,