Thanks for the comments.
I have a modest budget, so I cannot afford to buy a pair of new Dynaudio monitors. Then, I found that I can buy a new pair of Dynaudio nearfield monitor MB6's for about $700 plus shipping. The BM6's seem to have a better spec than the similar Audience 52 and costs less. In fact, the MB6's fequence response (43 ~ 20K +/- 3db) seem to be similar the Contour 1.3. The Contour 1.3 is bigger and costs a lot more than the BM6.
If I have more money, then life is probably easier for me in this area, just buy the Contour 1.3 or better. :)