The few things thing i noticed about Cowclops are... that it seems audio is out of sync with video. It may just be me but I compared it to my VHS and my beta-DVD transfers. I can't really be sure. I have to bring it into work and go frame by frame to check this. Also there is some pixelation. I was actually a little tiny bit, tiny bit that it is, surprised that it was taken from Laser disc and passed through an encoder because my VHS transfers are not much better and the bit rate is about the same.

Here's an example of some pixelation...
When Luke and the Gammorean guard are dropped into the rancor pit, as soon as the shot changes to see Luke and the guard slide from the shoot, the walls are a little blocky.

And I don't know if this is just my dics, but at a few points (that Ive noticed just from skimming) there is a noise line. Kind of similar to what you would see from a worn out VHS tape or bad tracking.

Example... TESB-When the probe droid is moving to the left of the screen after it first appears behind a snow mound.
ROTJ-Right before C3P0 explains how the "heroes" are going to die in the Sarlaac Pit. The camera is shooting up at the skiff from the pit.

However the Menus are pretty damn good.

Commentary track is useless because it is also on the Trilogy Bonus disc and it says who is speaking.