For me the biggest reason to upgrade is because I could no longer stand the glare on the 600. I was pacing at work trying to read and the glare on the screen made that all but impossible. I kept having to adjust the angle of the screen so I could read it.
I also like the touchscreen that the 505 lacks. I know some people don't really care for that feature. So it isn't important for them. If you don't care about the touchscreen, the only reason I can really think to upgrade is the enhanced epub support and the ability to start a lot faster if you have a large collection of books.
Of course if your prefer LRF books and only keep a few on the reader at the time, there probably is no reason to upgrade from a 505.
Etienne66
|