Dual Layer means you can halve the amount of compression, so effectively the video is much closer to the uncompressed original. You should see less pixel blocking, especially in backgrounds and a considerably better video image, that if well done should be almost impossible to tell from the original laserdisc copy without looking at it a frame at a time, at least on a normal sized TV.

Timeframe for my set will probably be 3 months or more. I only just received my ESB laserdisc today,and soon as I have all 3 I will get stuck into it. (They are hard to find in Australia). We are currently working on the laserdisc player calbrating it and scoping the RGB ouptuts to make sure it is all within spec. It hasn't been used for production for 4 years, so its probably in need of a little TLC.