Thanks Honu, you're description of these headphones were spot on. When I heard these headphones, It bested my expectation, I didn't know it was going to be THAT much better than the D1001. To me, the D1001 and D2000 aren't in the same class, the D2000 just does every single thing better. A lot of people say that they sound like different headphones. I agree and I disagree. The D2000 does share some qualities with the D1000, such as bass heavy, slightly recessed mids, and sharp highs. But since it does everything so much better, it doesn't sound like they are related.
All in all, I'm glad that I bought the D2000. When I first tried them on, I thought the sound was excellent. As of today, I have about 100+ hours on them. They seem to get better and better; but I can tell that the improvements are coming to a plateau. I've been using these everyday, for over a week now, and they are currently my favorite headphones for now. When ever I switch back to the sr80 or ms2, it sounds too bright and sharp. When I listen to the dt880, it just doesn't sound as "fun" as the D2000. Another thing I like about the D2000 is that it seems to play well with all music genres.
I'm currently thinking about upgrading the D2000 cable. The cable is really stiff and lengthy. If I can upgrade the cable for ergonomic purposes and also improve the sound quality, then it'll be 2 birds with 1 stone. I'm wondering if the mogami cables will improve the sound compared to the stock cable.