I don't think Axiom and Paradigm use the NRC any longer. What's there other than an anechoic chamber? They both have their own.
As far as I know, the NRC hasn't been involved in audio science since the days of Toole.
PSB still uses their anechoic chamber regularly. Nothing's really changed since their core findings in the 1980's: loudspeakers with a flat listening window (including the bottom 2 octaves) and smooth directivity index win double blind listening tests. Rumor has it that just before Toole left for Harman, the king of the mountain at the NRC was the Mirage M1 (or M1si?) and never lost a double blind listening test.
What's changed is that Audio Science Review and Erin's Audio Corner has pointed out just how few loudspeakers are on the market today that actually achieve those metrics.
