What does one purchase after owning horns?

I appears that the answer to the original question is this: better horns.

"Painting with a broad brush Shadorne, not all panel speakers use one panel and suffers from such"

All panels use diaphragms that are much larger than is desirable for broad even dispersion of their entire frequency range, small panels reduce the issues but none are entirely free of these problems. The big advantage of a well designed three or four way conventional speaker is that each driver can operate in a frequency range where it acts as a point source.

Soundlabs are awesome. In fact Gordon J. Holt used large Soundlabs for many years which attests to their sound quality.

I just offered some alternatives to horns as the op asked. I am not exactly sure if those who describe ATC and Genelec as S*** have actually heard them but then again there is no accounting for personal taste in this hobby.

I believe Inna's got it.

Hi Weseixas,

if you have heard an AG horn you will find a sound like a electrostatic speaker on steroids. No honking nonsense. Coloration is some myth due to some old rubbish horns made by someone else. Be clear on that.

I plugged in my Apogees not long ago. They are one of the finest planars out there, but they sound constricted after a Trio. Before the Trio I felt they were the finest speakers. But dynamic contrast aside, tonally they sound very similar just not as clear. No honking. I could never live with that.

Shadore,

regarding the ATC and Genelec I too could easily use the word S**t, but I have used 2 stunning ATC systems. Both in very good studios and one custom built for the space. But all the other ATCs I have heard domestically have had very bad sound.

As for Genelec speakers I dont know how people use them to mix on. They are devoid of detail, even in places which have the room sorted out. Strikes me they are for people who just want a warm fuzz for sound. I doubt an AG owner would stand 30 secs with one.

As I said earlier the answer to the question is a better horn.

regarding bass integration of the horns with the powered subs I'd like to comment. using duos and later omega duos, highly modded, since many years. the problems some people are hearing are real regarding bass integration. it's a time delay thing. just look at the stereophile review of uno nanos in late 2008, especially the step response. the bass is at least 2 ms behind the mid horn. this is a long time.I'm using digital delay to fix that issue. makes a big improvement to my ears. another issue is the built in amp sits directly behind the drivers, not a good thing.
for owners of duos and uno I'd like to suggest to remove the subs from the frame and place them roughly 2 feet in front of the horns. this will not only helps with bass integration in the time domain, it will also greatly benefit the horns because the subs vibration won't reach the horns anymore!!