The Audeze and Fostex have excellent distortion performance from Tylls measurements.
I agree Tyll's LCD-2F measurement looks like low distortion, but the TH900 one looks like it has bad distortion in the bass:
Do you agree? I'm interested in why you say the TH900 has excellent distortion performance.
Also the following shows Klipsch HP-3 has good distortion performance I think?