I changed a 770 for a n800 4 month ago. I miss the automatic sleep-mode enabling hardcover. I always used the 770 with the OEM OS2006; it was rock solid and never had a limitation on web browsing. I don't care much about youtube and the n800 is still not a perfect youtube viewer (choppy playback while it download the video) but the n800 gave me the web-cam, a crappy fm radio and a faster cpu.... so what ? the 770 played the resized DVDs perfectly well and was a lot less prone to broken screens with that hardcover.

the main reason I sold the 770 was nokia dropping OS support. 4 month later, I can tell you it was not a good reason as OS2008 is not A LOT better than OS2006 when you use the tablet as is for video-mp3-web

My call : keep the 770+OS2006 until the n810 can be found at a better price; unless you are a youtube or web2.0 freak