I'm by no means an expert on horns but recently had the oppotunity to spend some quality time with the AG Solos at their Manhattan dealership. BTW, the owner, Bob, is a super guy and a total pleasure to deal with.
The Solos are an extermely dynamic and detailed speaker and produce a soundstage which is quite impressive given the not huge size of the speaker. The horn tweeter and woofer implentation was excellent which is to say seamless, in my view. With the Burmester #2 CD, the Solos were impressive wether it be with Steve Ray Vaughan's guitar or Radka Tareff's gorgeous voice on "The moon is a harsh mistress." It would not be an exaggeration to say that this was one of those speaker auditions where I felt totally taken by the music without any care of the equipment used.
The downside is that these speakers can totally destroy anything less than a high quality recording. The Eagles "Hell frezes Over" redbook is considered to be a quality recording and I have always believed this. On the Solos, the recordings digititis came through loud and clear. After two tracks, we had to switch to the Burmester which was followed with DCC golds.
It would be interesting to someday see a passive version of the Solo at a price point which would be much easier on the old wallet.:)
Jet