Just a note from another user - I bought a book when they first came out and was disappointed in the poor battery management and some serious driver issues. I returned it.

Recently I had a chance to use one for a week and ended up buying it. My big issues were all fixed and it has been a great daily driver for the last month or so. The linux susbsystem has been very useful if you play within it s boundaries and I'm happy with it as a development machine.