Originally Posted by imageraw
thanks FizzyWater, it sounds like an excellent idea. I could use my old Nokia E63 for PDFs (and forget about the Calibre conversion thing, thought it'd really be great if there was a solution to this as well) and wouldn't need to unnecessarily spend money on a new device. It'll take a while before I can actually test it (travelling right now) so if you or anyone else has more suggestions, please let me know!
ps: my eyes cannot stand back-lit devices for more than an hour, hence my query.
I am using an android smartphone with an sd card to copy books to the prs-650, and calibre companion/openvpn to sync the tablet with my main calibre installation. works quite well.