If you're a more on-the-go person who needs a small laptop that needs to do it all, and do it all day then you might consider also checking out the x220T laptop

If you're a more on-the-go person who needs a small laptop that needs to do it all, and do it all day then you might consider also checking out the x220T laptop. They have a model with an i7, sometimes they have 3G sim readers, and has a touchscreen + touchpen (you can disable one, or both of these in software). These are great for taking notes, more then enough power to survive a day of real programming.