I replaced the 4 inch mids of my CDT 642 3-way set with a Vifa PL11WH09-04. The midrange is greatly improved. What are the thoughts on this series? I am considering replacing the 6.5's as well. The basket of the vida 4 was identical to the CDT, the magnet was much heavier. My set was bought in 2002, I noticed that the new CDT set has the same magnet weight as the Vifa I just bought.