The 600 definitely looks like it's going to be my first reader. Search and dictionary were always on my wishlist along with being able to use library ebooks.
I also like that it has 5 font sizes. My eyes are not getting younger and I've always needed glasses.
If the screen is as good as on the 505 I'm sold. Think I'll get the black one.
Does anyone know whether it has sd card support or not? With all the other goodies this wouldn't exactly be a deal breaker but sd card support would make the deal even sweeter.
Edit: Looks like it has SD card support. Found it in service manual.