Summary: Really wanting to buy the AD2000 I got the W1000x on the Japanese Yahoo Auction site for a ridiculously low price of 29000 yen. They are used but have almost no wear or tear. I guess they have been broken in alreay, but I really can't say. The might have been used as an exposition model since the plug doesn't show any wear.
Using my Sony XBA-3 in the office most of the time, I found the W1000X not as immersive as I would have liked.
Summary: I am glad to finally see Audio Technica offerings with a decent retail presence in the United States, and with reasonable prices to boot. The W1000X was reviewed positively at an import price of $500-700 several years ago. Today, you can purchase a pair for $399 shipped via BuyDig (a subsidiary of Beach Camera, an authorized AT retailer).
Pros: Great build/style, uniquely expansive sound with rich bass, engaging mids and potent treble.
Cons: Shortchanged by horrific stock pleather pads, potentially temperamental fit and comfort depending on pads
Summary: Firstly, fit and finish:
I am able to wear these guys for upwards of 7 hours in any day. The ATH "wing" mechanism is excellent, and one of the best headphone fit devices on the market. Perfect fit, every time, even if someone else tries them out. Totally amazing. Unlike the W5000, these suit my head nicely (I have a fairly large noggin) and stay in place even if I shake my head about.
The cups are still super nice looking. No change there, of course.
Pros: Glorious midrange, beautiful with vocals, fantastic rich bass
Cons: If the source is too bright, these will accentuate it, pleather pads (minus one star from design for that)
Summary: Bought my ATH-W1000X headphones used, with leather earcups and an improved cable. Using a Linn Mimik CD Player and an older Woo WA-3 with Amperex (Holland) tubes, and getting what I consider exceptional sound for from dynamic drivers. I also use a Stax Sigma with a Stax SRT-1W amp/preamp, and the Audio Technica 'phones come reasonablyly close to the Sigmas through the Woo amp.
Summary: It took me a while to warm up to this set of ATH-W1000X, because they are just so warm compared to what I'm used to, so it sounded like they lacked the clarity of my other sets (which, to be fair, are excellent and very expensive sets such as the Beyerdynamic T1 and the open ATH-AD2000X) - but it's not that the clarity is lacking, it's just that your ears are full of warmth and you don't notice that EVERY detail is there.
Pros: Beautiful tone curve (warm without being muddy), crystal clear, Audio-Technica comfort, great value compared to competition
Summary: Some of the best built headphones on the market, and the most comfortable despite their size. The frame is entirely magnesium except for the wing mechanisms, and the wood is far and away the best finish you'll find on a headphone, including more expensive Denon models. Each model seems to be entirely unique with its own "Fingerprint" of wood. Mine are a delightful cross-section of Black Cherry, the rings are quite easy to see.
Excerpt: Instant pleasure from first listen, and has increased in only 1 days burn in (either my ears or the cans). Beautifully detailed highs. So delicate and in no way bright/piercing. The middle gives songs with female vocals a silky lushness, and heavy rock music an energy that puts a smile on my face. And the bass.... I thought I was a bass head, I thought I needed it in bucket loads. The W1000X has a kind of bass that I've never heard before.