I can't believe that a version with slightly upgraded caps warrants a whole new Stereophile review!
I find the measurements interesting, but at odds with what I heard and measured in my room. Atkinson measures very flat across the midrange, whilst I had a pronounced emphasis around about 600Hz, IIRC, followed by more of a presence region dip than Atkinson measured. Robert Harley found pretty much the same, if you read his interesting review of the Graham LS5/9.
Atkinson does note that the off axis response does involve significant dips. I found that to be the problem with this otherwise wonderful speaker. I loved it, but it really does need to be heard nearfield to get the best of it. As Atkinson says, it will sound too polite in larger rooms. I also found that firing down a small to medium sized room it didn't quite have the energy required to leap across the distance. Saying that, I miss it at times, and not only for acoustic recordings. With a sufficiently powerful amplifier, it can do lean and tight rock music: it just can't do lower bass (so no to LedZep, yes to Sleater Kinny). For simply listening to voices on Radio 4, it's probably my favourite of the speakers I've owned, even including ESL63.
I also found it interesting what Atkinson said about time alignment (not great!), which he suggests has been sacrificed, or given a low priority in favour of evening frequency response.