I don't know about the quality of these screencpas. I usually take my caps off of iTunes, but they were not up on the iStore. I am getting fed up with iTunes. I wish that they can get their act together. It took till Tuesday for the last episode to be uploaded to their store. If I find that the iTunes caps are better, I will just substitute them.
EDIT: I finally was able to download from iTunes. I deleted the old album and uploaded new screencaps.