Why not horns?

"Some of the very best loudspeakers I've ever heard and some of the worst –where horns"

I fall into that category as well.

"Does any other horn owner have a problem with larger than realistic presentation?"

What does "larger than realistic" mean? Some examples?

Mapman, for example; singers with 10' mouths.

Large images are a result of recordings not loudspeaker design. Near all recording spaces, instruments etc are larger than reproducing loudspeakers. To me the worst offending loudspeaker designs in audio are bookshelf models they offend in many ways limited dynamics, massive thermo compression,reduced frequency response,Limited SPL.

Macrojack, One thing your enjoying is the controlled dispersion of horns. This reduces room effects. Your also not moving air but exciting air molecules into motion just like a tidal wave the water from the event isn't traveling just the wave.

How about an example of a recording I might be familiar with where the players (singer, whatever) is/are properly sized for reference?