If you liked White Star, then you can't go wrong with this supplement. It contains a wealth of information highly useful to virtually any kind of campaign--the new vehicles, including hovertanks and striders (much like AT-STs from Star Wars), are in particular a welcome addition. There is also a simple, functional skill system that adds depth to characters without over-complicating them. Finally, there is a section on Serials, where you can roll to find out about your character's background, which does affect your ability scores (and, yes, Traveller fans, you can die on a bad die roll!)
That being said, one of the things I like about White Star is its simplicity, and I think some of the new material adds little to the game, and amounts to new options for the sake of new options. Some of the seven new character classes, such as the Bounty Hunter, Deep Space Explorer and Two-Fisted Technician, are broadly useful, but the others are odd or very niche (one of them allows you to play an 8-15 Mech as a character; that may appeal to some gamers, but seems unworkable and goofy to me). Second, some of the new creatures seem slapstick amd silly ("Space Ducks?") Again, some might like that; I don't, and would have preferred something more useful.
However, the amount of useful content vastly outweighs that which I don't find useful, and as such I would recommend this product for virtually any kind of White Star Campaign.
[4 of 5 Stars!]