I'm not exactly a sci-fi geek, and I'm far too young to have been influenced by the pulps so perhaps I am not the target audience for this Marvel series. That being said, I still enjoy the balance of it and appreciate what they were trying to accomplish. It's almost a Classics Illustrated for sci-fi nuts. Obviously, both Roy Thomas and Gerry Conway have a lot of love for the great science fiction writers of the 20th century and seem thrilled to be able to adapt many of their favourite tales for the Four Color world. I find myself particularly interested in the accompanying text articles, where the authors discuss issues such as their relationship to the source material or how they went about securing the rights. Many of these issues also feature 3 to 5 page back-ups from the Atlas era; a real added bonus.
I particularly enjoyed Roy Thomas' take on Farewell to the Master, the story that became The Day the Earth Stood Still. Thomas explains that he wanted to stick close to the original story to the point of assigning Ross Andru the pencilling chores as he'd never seen the movie. Another interesting issue is Conway's take on Arena by Frederic Brown. It is much more sophisticated than most of what was coming out from DC and Marvel at time. Some of the weaker entries, such as The Black Destroyer in issue #5, still have their moments. Even the Golden Voyage of Sinbad adaptation that runs through the final two issues is a fun read. Sadly, there are no Atlas back-ups in those issues. Since licensing headaches will prevent these books from ever being reprinted, I suggest you try to find some cheap copies and give them a try. They aren't perfect, but they are certainly offbeat and serve as a link to the heyday of sci-fi pulps.