I have both the AT ATH-W3000ANV ("Japan") and the ATH-W1000Z ("Maestoso"). While I like the AT sound, overall I'd say the ZMF cans are better. I really like the limited edition Japan-- it is warm and detailed, with a sparkling top, famous AT mids (love it or hate it), and a fulsome low end. A famously euphonic headphone. But comparing with the Atticus, it sounds a little bright and a touch thin to my ears, and not as balanced. The Eikon actually reminds me a bit of an AT headphone-- a little light in presence and punch, but euphonic. Albeit a little too bright up to for my tastes-- a certain part of the top end on the Eikon is a little too incisive for my ears. I really like its overall tone/tonality/texture, but the top is somewhat problematic for me.
On the other hand, I love the Atticus. It sound fuller and richer than both the AT's and the Eikon, and yet is smoother and just as detailed. The Atticus is the winner for me. Aside from the Kennerton Vali, they're my fave for rock/pop at the moment (I also like the ZMF Ori too).
Regarding wood color changes: It might just be my imagination, but only after a few months it seems like my cherry Atticus is darkening a bit (is that possible?) It's looking even better now than when I got it.