I've been going through these episodes at a leisurely pace. The only episode I encountered audio trouble with so far was "Haven," switching from 7.1 to stereo makes it tolerable.
One thing I really notice is how obvious the make-up can be. I like the episode "11001001" but the headpieces for the Binars really stood out to my eyes. The colour change from their faces to the scalp didn't look gradual enough. And In "Too Short A Season" Jameson's old age makeup looks even worse than before.