I am a longtime fan of the original. The Revised Edition is a vast improvement on the system. Mr. Crawford takes the OSR engine into refreshing territory. They book is worth the asking price just for the advice and the tools it provides. With this game you can pretty much run any sci-fi game you can imagine with it. Easy to modify and house rule, flexible and simple, yet robust. Can't recommend it enough!
[5 of 5 Stars!]