Hi s1mp13m4n,
I am legally blind, and came here specifically (about 8? months ago) to get that same question answered,
https://www.mobileread.com/forums/sho...33#post1014333
they didn't have that thread with the font size screen shots then...
So I started doing research from a low vision point of view:
http://docs.google.com/Doc?docid=0AS...emY0em00&hl=en
and also to keep track of which ereaders I had looked at, made what might be the largest (kept up to date) list of ereaders, past, present and future:
http://spreadsheets.google.com/pub?k...en&output=html
I went with Ectaco Jetbook Lite as I had found buried in a youtube video that it went up to a size 32 font (the ectaco site didn't list font sizes, for some reason most companies don't, most only offer the number of font sizes available) At the time the JBL did not allow any of the public library formats, but now they do....
My _only_ regret on getting the Lite was (not having an mp3 player) was not considering its big brother which has an mp3/audio book capability and the memory options to hold an audio book
Low vision/legally blind has come up a few times before:
https://www.mobileread.com/forums/showthread.php?t=90654 has info about low vision specific sites, programs (one example BARD)
https://www.mobileread.com/forums/showthread.php?t=98195 how I use my JBL to help me navigate, I called it using my JBL as a gps...
in my initial request in the which should I buy sub forum a few said the Kindle DX and our local library had a one day event letting patrons see and use a DX and K2 I brought my JBL so the "class" had 3 models to compare.. I could see that the main advantage was as the poster who had suggested it mentioned: more words per page at a large enough font that I could see, meaning less page turn button mashing but its heft and price (I don't have an mp3 player for a rea$on) made me glad that I had gone with the JBL
http://www.ectaco.com/eBook-PDA-Dict...-items/?atid=1
http://www.amazon.com/Ectaco-Lite-Jb.../dp/B002Z6B4AC