> I considered Pi+Monitor, but for me, something like the Pinetab is a cleaner, simpler solution. And at $99 without the keyboard, that's a pretty decent price.

Of course you should go for what is easier for you, and the pinetab does sound easier, however I'd argue that it is not cleaner.

Separating the screen and main unit will allow for a more serviceable solution, changing either piece if it breaks, or upgrading the main unit if you need more power/different connectivity.