First off I really like the old sci-fi movies. They are cheesy as far as the acting goes but that for me was part of the charm. When I was a kid these were cool fun movies to watch and I still get that feeling now.
This set comes with 20 Million Miles to Earth, Earth vs. Flying Saucers, It Came from Beneath the Sea, 7th Voyage of Sinbad.
I liked 20 Million Miles to Earth, the best. 7th Voyage of Sinbad isn't the best of the Sinbad movies either.
There is a ton of interviews and behind the scenes info which in a lot of ways the best part of this set.
One of the other cool features is the ability to toggle between B/W and colorized, by using the angle button.
The biggest down side is the price, quite expensive at around $80, but if your a collector I guess it's worth it.
The PQ is good considering the age, and it does come in 5.1 though most times isn't really apparent