Comments on Project Management Body of Knowledge, PMI

On  the bright side, the text is well written,  in American English and  neatly organized, without any misspellings or errors. Its style is formal and actually contains all there is to know, in order to sit for the project management institute examinations. Its scope is by far more general than the compTIA Project + exam guide, which  focuses mainly on IT projects. The forth edition is revised and now includes new additions, such as requirements gathering.
On the dark side, some of the paragraphs can be so long that studying it, might become a drudgery. Moreover, there are no questions and answers, exercises or problems for the reader to solve. in order to reinforce learning.
All in all, this is the bible of the manager, full of information, but its formal structure resembles more of  a reference manual, not a course book to prepare for the exam.

Comments on CompTIA Project + Study Guide

On the bright side, the book is very well written (American English) and organized with only a hand full of misspelling errors. The text is easy to follow most of the times, is full of real life examples, case studies and questions. The book does much more than just prepare you fully for the exam. It gives useful advice on daily problems. Its preliminary assessment test is a standard procedure for all Sybex books, to guide the reader to the chapters covering the knowledge he is missing.
On the dark side, the schedule development techniques and the performance reporting tools paragraphs are rather complicated and difficult to understand. Moreover, the book is heavily text based with very few diagrams and graphs.
All in all, the book provides you with all you need to pass the exams. In addition, it can be used as a reference resource throughout your professional career.