Oh man. Here's the deal. When you get into those price ranges, the higher the price does not fetch the same or equal gains in audio quality (diminishing returns).
Many will say they 7000's are worth it. But how much better are they? Are they worth hundreds more? Subjectively, you may be looking at a 15% "increase" in audio quality. You start to pay a massive premium for small percentage-point gains in performance. My Ultrasone Edition 8 are triple the price of my Pro 900's and certainly nowhere near triple the performance. Maybe a 25% gain (to me)? And to some, not a gain at all, just different. Also, you need to be honest with yourself and ask if you have enough experience to fully appreciate the difference between the 5000 and the 7000. Blasting straight to the top deprives you of a journey that makes you appreciate the fine qualities of the 7000. If you don't have much experience in audiophile land, the D2000's will rock your soul. And when you upgrade, eventually, you will really appreciate the fine differences as they are anything from night and day.
Edited by SoundFreaq - 7/24/12 at 12:35pm