thanks for the info, its nice to see a comparison between the screens.
Actually, both look the same to me. I had a PRS505 and i still found the screen to look really nice. To me, the most important thing would be for the screen to look as white as possible, to make it feel like a real book. The artifacts, refresh rate and resolution is irrelevant to me. I never complained about those while reading a printed book, hahaha