I'm beginning to think the model of "one device to bind them all" is obsolete. A lot of people, including me, have two or more little devices. So the idea of something that does everything is basically wrong.

With that in mind, I'm thinking of a small phonelike device that is almost throwaway and is definitely cheap, has a few things like gps and limited note-taking. Then for the OTHER small tablet, which I would take when I don't need to be quite as mobile, it would be something like 7 inches, good mind-mapping, good reading, ok moviewatching, etc etc.

I find that when I'm doing what I would call casual traveling, like within normal commuting range, I don't spend much time web browsing and not all that much time reading, for that matter. So I don't need the N900--it's overkill. When I'm on a five-hour train trip or in my car on a significant trip, pocketable isn't important -- I will carry something about the size of what I carried all through high school and college -- my trusty spiral-bound notebook, which I took on bus commutes and all over without thinking about it, held in one hand, at the ready. Except this thing the size of a spiral-bound notebook will be the do-it-all device, not pocketable -- in fact, I think that when I bring it I will ALSO have the cheap phone in my pocket.

So, when I transcend my N900, I will go to a cheap phone AND a great tablet, but not a 10 inch behemoth like the iPad.