vagabondo. The reader displays PDF files very well. The problem is, almost all PDF files are made for full size computer screens so the text shows up way to small to be read on the reader.
If a file has been created using PDF with the reader in mind then it reads very well. ie. the file must be created using huge font sizes.
If you have lots of PDF files and are hoping to be able to read them using the reader then it probably wont work.
However, you can get thousands of books for free at this site and others for the reader. If you are into old books that are in public domain (Almost all the "Classics") The Reader is the device for you.
I use mine constantly.
To answer your first question, which device will work to read PDF files made for a computer size screen?