Nice review, thank you! My buddy has a pair of an older version (although it doesn't look like much has changed) paired with a Dynaco ST-70 / PAS 3. As has been mentioned here with the correct mood (chemically altered seems best) and older rock music they can sound great.... other times not. Tone controls can help out a lot. The price for new ones is silly but you can buy older used ones for a small fraction of that and have some fun.
Pre-1975 Marantz 22xx, or better yet, 42xx for real style, is a good pairing because of the tone controls. I'm sure that goes for lots of other gear with tone controls. For a long time when I was primarily focused on vintage gear, I thought the ultimate combination was Klipsch speakers (anything made of 3/4 plywood), receiver as described above, Technics SL-1200 mk II or similar, Stanton/Pickering blob cartridge, fancy stylus, and then the optional Nakamichi cassette deck, Akai reel-to-reel, or Schiit Modi. Vintage speakers seem like a better bet since they might appreciate. If I were going to get new US made horn speakers, I would be much more interested in
Crites. Model B or D. I would probably build my own Walnut cabinets with extra bracing.