I liked the MD's better than the Denon's, but I'm sure part of that was being away from the Denon's for a year or so before I got the MD's. Some of it was also the "unboosted" bass of the 3.0 version. I had the 3.1-ish in a balanced prototype, and it was closer to the Denon's. I've heard the D2000 a few times, and owned the D5000 and D7000, had both the D5000 and D7000 at the same time for a little while. Over all, the D7000 is a bit more refined, a bit more treble without being objectionable, and much more bass slam, but boosted (slightly) bass. It is also still the most beautiful headphone I have seen to date. The MD isolates better, is more durable, looks steam-punk fugly, but in a really cool way, has my preferred bass signature, in that it seems more neutral to me - there when called for, not there when not required. The MD is also half or less the price. I always come back to value, and that is where the MD is so hard to beat for me. To step up in sound signature, at least in a closed headphone, you have to pay a bunch more. Still though, the signature is not for everyone, nor should it be. It's definitely ok not to like them. Ive come the the conclusion also, that when comparing to open cans, the disparity in some aspects of sound quality is larger. Still, at $300, there are not many as good, and fewer that are better, at least to my ears. A good used pair of HD650's @ $300 +/- will definitely give them a run for their money. If you like the sound signature of the MD's or the HD650's, they are a very complimentary pair - open and closed, smooth, mildly dark, great detail, accuracy, comfort. To me, as good as it gets at lower mid-fi prices.
This seems a very honest and accurate description to me. I do give value and comfort careful consideration when choosing a hp and spending my money. Since I don't ever wear anything but iem's outside, I don't care so much about looks. For me, it's 20% comfort, 20% value, 10% amping requirements and 50% sound signature...more or less. The MD gets high marks in those categories.