[megacoupe]

I've gotten years of use out of my PRS-500 but it seems to be fading a little bit. I checked out the Nook at my local B&N and found it was much less cool in person than it seemed on the internet. Kinda sluggish, didn't like the interface, etc. Don't really care for the Kindle models. iPad is not an eBook reader, in my opinion (though it could be awesome for comic books). So, I'm thinking it's very likely I'll be getting another Sony.

How do the newer models (the 300, 600 and 900) compare to the 505? I've heard of glare issues with the touchscreen models, which is a dealbreaker for me; clarity and contrast is the most important feature to me. Here are my required features in an electronic reader, in descending order of importance:

1. Quality/readability of the screen
2. Battery life
3. Ease of transferring files through a computer (the 500 is slightly limited in this area because it doesn't show up as an external drive)
4. Common formats accepted (I know Calibre takes care of this for the most part, but better PDF support would be nice)

Any other features (like dictionary, annotations, wireless connection) are nice, but far from necessary. Do any of the new Sony models beat the 505 on any of these 4 points? If not, where's the best place I can find a new 505? (Is eBay the only option?)

And if anyone can think of a non-Sony reader that scores well on the above 4 points, please let me know.