The worst cone speakers are horrible. There are cones that seem like they will loosen my fillings in my teeth. The worst panel speakers are horrible. The worst horn speakers are horrible Generalizations are nearly useless.
But the best horn speakers are sublime. Horns are capable of a wonderful combination of sweetness, ease, coherency, power, dynamics. You should try to find some great horns to listen to.
Now, in my "top 5 speakers ever" list is a wonderful dynamic speaker. Unfortunately, it is very inefficient to drive. But my point is that generalizations are flawed.
Now, for MY money, considering the above listed attributes of horns, plus typically good efficiency, more of my favorite speakers are indeed horns, so I would suggest listing to some.
Something I can categorically state is that the prejudice against horns in the Western press and, as a result, Western audiophile circles, is ridiculous and completely misleading.
Seek some out. Go to some shows. Then YOU tell US.