I agree with everything eucariote has said. The D2000 a a good headphone if you are looking for a quality base over a large amount of base. They are a nice looking pair of cans that are really comfy albet quality control can be a little fluky at times but is nothing out of the range of unacceptability,. The only reason I have decided to sell them is that i prefer the clarity of the dt880s. The D2000 won't blast your head off with bass, but with my fiio e7 they could rattle my earlobes whenever I listened to dubstep :P
On that note: I'm in the market for looking for a new pair of cans. My obvious choice is the DT880s 600 ohm but this wouldn't be any fun if I didn't have a bunch of cans to pick from. I was looking at the AKG Q701 since they are new to me from the last time I bought a pair of cans. Budget is around $200ish. What I look for in headphones is clarity but mostly in vocals since I listen to a lot of female vocalists and orchestras like Two Steps From Hell, Thomas Bergersen, X-ray dog, ect.
I really enjoyed the detail and clarity on the Shure SRH940s that I used to own. Might as well add those to your list of choices.