Finally got around to reading your review. I agree with you on the large head fit. Thankfully I have one. I also feel that there is little to complain about with the sound, just nicely done through out. Have you had a chance to a-b it with a d7k yet? I had the d7k but it was a lil over a year ago.
I'm sorry, I've not A-B'ed it with the D7K, though would like to chance. The TH600 went back to Fostex. Borrowing it again isn't on my agenda but if it came to it, I'd do it.