We use HP's and Lenovo's for our 'corporate' laptops, with the more recent purchases leaning towards the Lenovo's.
They aren't perfect, but one attraction is they have lots of accessories like docking stations, etc... and they are nothing if not tanks (durable).
My current favorite is actually a Toshiba R835, but it doesn't meet you screen size requirements or budget.I love this thing. Light, fast, awesome battery life...
http://www.microsoftstore.com/store/mss ... /list.trueThis lenovo is in your price range
http://www.microsoftstore.com/store/mss ... /list.true