My favorite in this series despite some style defects (in this volume) and a really problematic translation

An exceedingly attractive universe ...
The pace of the action of good ideas and voltage ..
Most characters have a real presence ..
It is really appreciated as the numerous innovations techno narrative pose real ethical issues (bio engineering and contact the other extreme (original meaning of aliens in English)) ..
Definition of the human ...
The end justifies the means?
The management of armed conflict and its implications (logistical and political) are particularly well regarded ...
In short a great time ...
Scalzi has managed to send an adult audience and at the same time to a younger audience .. (this may be more a weakness than a quality .. as this creates can be stylistic tensions that occasionally serve this volume ??)
Compare this to the Stars, attention! (Starship Troopers) or Eternal War to the level and quality strikes me as exaggerated ..
But it could almost be as the author clearly the potential ..
Hopefully we reserve some surprises .. and that in the future it will benefit a minimum of correct and careful translation ...
Briefly: NOT BAD !!
PS: humor is also at the appointment without descending into farce ...