If I were to buy a new laptop PC right now, I would look at and compare the Dell Latitude 5000 and 7000 series:
Business Laptops - The Best Business Laptops With Windows 7 | Dell
and then I would probably buy a version of the 13" 2-in-1 7000 series, but I would look and compare a bit back and forth.
If I were to buy a Mac, I would buy the Macbook Air, again.
And as always when buying laptop, I would buy a second power cord already from the start. One on my desk/office and one in my bag, I hate having to unplug it and fold it whenever I would leave home/office.