I have the XA25 with horns after 5 years, I have everything sounding pretty good. But I am used to it I guess. I go way back, almost. Advents, etc
Here is what I've heard myself and read. I assume other models would have a similar sound signature.
Joseph Audio. Most widely praised speaker here. IMO. I have not heard.
Magnapan 3.7. Always beautiful, natural sound. Your x250 would drive them. Imposing size.
Wilson. I didn't care for those. Sasha DAW with audio research monoblocks. Distant and dull.
Revel. These have a very appealing sound with nice bass. The ones I heard may be too high.
I always liked the big Dunlavy sound. My memory may be crossed but I think Legacy would be worth a look. Wide price range.
The list is all over but you're on square one, again. Good luck