I was able to try them out a few years ago when i was looking out for my first wooden can. when I went to the guy that owned them. He laid these three out for me to audition: the VTG, the AD2000 and this.
If I would sum up the overall experience (of these phones) in one word, it would be - Polite. Everything sounded plain, although detailed (more than the VTG, less than the AD2000), mainly on the lower frequencies. if I recall correctly, it sounded like a flatter A900 (which i had) with everything sounded more 'forward' if I am using the term correctly, although it may be because the A900 had recessed midrange.
I guess that's why I chose the VTG over these. I personally didn't hate them, but the VTGs 'sang' to me (in a 'female vocals are very close to you' kind of way.) adding to that, their age made them more desirable. plus points for them since I tend to go ampless, and they seem more forgiving to the source.
Now, if I had the chance to try these out again, i would be more likely to buy them.