My major problem with this app is that it did not remember the last page read. Read about 50 pages in a book; close it; come back tomorrow and you are back at page one. There is a bookmark feature, but we expect our computers to take care of mundane tasks such as remembering where we left off.
My other issue has to do with folders. I use a 3rd party app to add files, and Good Reader allows me to copy a folder, together with the container of files, with a simple drag and drop. PDF Pro requires me to copy all my files, and then using the edit function select which ones I want in a folder, and then name the folder appropriately. Once again, too much manual work! I expect the app to do this for me.
I agree with the other reviewers, that it works very well, but these two issues are big ones for me.
DocTerryC about PDF Pro - Reader Editor Forms, v2.4.1