I used to love CWC. I at one time owned the entire series, including the VHS' for Chancellorsville, Fredericksburg, Chickamauga and so forth.
But then I got old enough to start realizing it's flaws. Most are heavily focused on one side of the battle. Chancellorsville for instance is heavier Union, same as Chickamauga. They also put the History Channel budget into it, aka, just enough for a few reenactors but not enough to really give the massive scale of the battles being portrayed.
I would say it's a good introductory series for people new to studying the Civil War but not so much for those who are both older and know quiet a bit about the conflict.