I have a simple PRS-500 which I use everyday. I can't believe I've managed to struggle along for 2 years now without 3G, touchscreen, WiFi, dictionary, stylus, keyboards and a cup-holder. Come to think of it Ive never even used the music or photo features that ARE on it but I sure do alot of plain old R E A D I N G with it.
I would buy another reader this year with a larger screen and the mentor 9.7 sounds interesting

but I'm starting to think it's just vaporware. A least for 2009. Bummer...