Channel Islands D200 have replaced my McCormack on my 3 sigs. The McCormack is an excellent choice, but the CI D200's are better IMHO. The main distinction is midrange clarity and low level detail. The McCormack seems to have the deeper soundstage, but the d200's wider. In reality, the sense of deeper soundstaging is because the McCormack's aren't able to bring the low level details forward. The result is also a more relaxed sound for the McCormack, which may be more musical for some people's preference. Pairing it with the somewhat relaxed Vandy's, it's not nearly as detailed or focused as with the D200's.
I loved the McCormack for years and it's like breaking up with a girlfriend you still really like.. till she came along. I'm comparing to a DNA 1 RevA Gold