Touch is the way to go. Keyboard on an e-ink reader is a stupid waste of space.
I say this having used 0 Amazon readers, but I love my Nook Touch more than anything.
Nook Touch = hardware-wise best e-ink reader there is. The drawback? It is B&N. Not a big deal (or even preferable) if you sideload all your books like me. If you buy off Amazon, you're stuck with a Kindle so just get the Touch.
I prefer the basic Nook myself. Easier to handle, better basic functionality, and buttons. Plus, the rubberized back makes it easier to hold.
I hope you mean the newer Nook Touch, rather than the Nook Classic. NC is garbage. Heavy, slow page turning, and its screen doesn't hold a candle to the current crop of e-ink readers.