If -- and right now that's a really huge "if"[*] -- so, if I ever get a N800, I'd keep my 770 as a dedicated bookreader. It's really good at that (amazing screen and unbelievable battery life, in the dark at the lowest screen setting).

I'd never give it away, because I just won't have anyone else have it. It's mine, I tell you!!! My precioussss....
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[*] Here's the thing: the N800 may be faster and have more memory, but nobody seems to be able to confirm that it has the same battery life as the 770, and I couldn't live with less juice. Then there's the thing about the operating system: It seems to be the same ITOS2006 we have now, with, apparently, added (again!) incompatibility of applications; and there's no mention of a new, less sucky, handwriting recognition engine, although rumours of XT9 were afoot on the forum some time ago. And finally, the aesthetics: the N800 is definitely uglier than the 770. I'd have to move to another country if I was going to use it. Fortunately, I'm already doing that, so its ugliness at least is not going to be a show-stopper.