So far, I have been a fan of the 4th edition of Shadowrun, and this book only improves my opinion of the game. If you are wanting to play a character who Chromes themselves out (ie: uses mechanical augmentation, cybernetics) then this book is for you. Not into Chrome? Prefer flesh? No problem, this book has bioware covered too. Lots of new information about how such things are viewed in the world. Lots of new ways to customize your characters. Great fiction (as expected in an SR book). Well worth it, I cannot recommend it enough for Shadowrun players.