I too am friends with the importer, and own the Horning Agathon Ultimates. In my opinion, they are one of the best speakers on the market. Tommy Horning (the designer) is perhaps the first person to correctly implement the Lowther driver; his design takes full advantage of its outstanding midrange, while avoiding all it's nasties. The tweeter Tommy designed blends seemlessly with the Lowther, and the bass drivers provide plenty of deep powerful bass.
I use a 30 Watt per channel Tube Distinctions hybrid amplifier, but I have heard the Hornings sound incredible when driven by 7 Watt SET amps (for example, that from Tron), as well as by the op amp-based 47Labs GainCard.
As should be obvious, I enthusiastically endorse Horning speakers.