I'd thought about a Chromebook, but ended up going with a TF300T instead.. with the keyboard dock, it replaced my old netbook rather nicely
Full 10" Android tablet as well as the keyboard (the dock is also a second battery.. I can easily go 4-5 days of occasional use without a charge - or at least 7 hours solid without it dying on me.. haven't used it steady longer than that yet).
There's even a version of ConnectBot (for those of you familiar with that app) designed specifically for the TF300's hardware keyboard. Works like a charm. Pretty much my -only- complaints are 1) lack of ethernet port (yeah, I can get an adapter I suppose), and 2) Android's lack of a 'real' linux terminal. But as a non-primary netbook, it's perfect.
My biggest hesitation on Chromebooks was.. just how 'married' to Google are you by using one? Yeah yeah, Android.. but I cooked in a custom ROM on my tablet, and pretty much no data goes back to Google now.