I was just at circuit city and they had rt3000p's for sale open box. top part was $150 each, and the bottom was I think $399 each(could be less). I just got a pair of RT2000p used only about a month ago. I got those for $850 for the pair shipped. I am thinking about just getting the top part. anyone have any ideas? How much better are the 3000 over the 2000?