Very interesting. I'm conditioned to Grado SR125i's and looking for something closed-backed for the office. I love mids and hate sibilance. If it comes down to ordering headphones with no test drive I may go for these.

Nice review, where did you pick them up for $242.00? still tossing up between these or the beyerdynamic T 70p i really like them but as you mentioned there not comfortable for extremely long periods so haven't decided yet.

Great review and I completely agree. Even though I prefer the coloration of the M-100, the PSBs are excellent. I am also looking forward to their upcoming release from sister company NAD which is also designed by Paul Barton.