Originally Posted by vagabondo
What is the best reader to view .pdf files?
Sometimes ".pdf" refers to DRMed Adobe e-books, so for completeness I will reiterate here that no current E-Ink device reads such files. The Sony PRS-505 might do so once it has Adobe Digital Editions, but even that is uncertain.
I have never tried it, but my understanding is that the iLiad will read password protected PDFs, if you have the password.