I would have said Headphones for detail and immediacy until I experienced proper horn systems.
There is a punch, speed and yet tonal accuracy and rightness to them that is hard to get a way from.
Once you expand that 20Hz to 20000Hz, it is a rather compelling sound. Practical and take anywhere - er no. But you do experience sound on another level.
To me they manage the speed and delicacy of panels or ribbons but have the slam and punch that they cannot muster. Folk who have not experienced them before say they punch rather like live music - of course much live music is heard through horn systems in sound re-enforcement installations. But I have found as soon as you mix horns and boxes for smaller foot print you loose so much. Too big a compromise.
Having had a horn system, albeit a constantly evolving one, I changed my headphone taste to keep up, and be voiced more similarly - interesting one that.
I honestly believe that what I hear inc. tonally from well implemented horns is the best sound I've every heard - not just my system but others I've heard...
Good for you Speedy.steve. You listened with your own ears instead of relying on the 30 year old American magazine prejudice against horn speakers, which has poisoned the US market for horns. The far east has held on to horns over the decades for a reason. They got it long ago, the rightness, speed, dynamics, transparency of good horn designs coupled with tube amps.