Hi guys
I took the plunge and finally bought a dedicated reader - the PRS 300. I have used an eeepc 900 and the iphone as readers with limited success. The eeepc was a bit cumbersome, got a little hot and was noisey when the cooling fan came on. The iphone with stanza and calibre was good but I always felt it was tough on the eyes. So I bought the sony reader.
I have to say that I'm a little disappointed so far mainly as it is so hard to read in average light conditions. Maybe its because I am used to backlighting in the eeepc and the iphone or maybe I'm just getting older and my varifocals need to be updated

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Anyway reading with the smallest default font was almost impossible for me unless it is in bright light (outdoors or directly under a lamp). The middle size font was better but what annoyed me was that the screen displayed almost the same number of words as my iphone!! - mainly due I think to the large margins. The largest font was way too big to be useful.
So I figured I would try and change the default font with the help of various threads on the forum and the excellent calibre. I eventually managed to change the base font to 13pt, removed the breaks between paragraphs and set the margins at zero. This helped and the small font on the reader is now much more readable.
Still as I was lying in bed last night holding the prs300 in position to catch the best light from the bedside lamp, I wondered whether I made a good decision. I figure I will have to work a bit more on the font size and margins before I get it right. Not an easy job though.
John