When you are buying a laptop always go for Business model and they will do better than the models that most of you buy. Very seldom most of you buy a Business model. Most of you know only about the basic model and then buy the same at your work place too.
We will suggest HP Probook as a very good model. If you have additional funds invest in EliteBook or a ZBOOK. We are configuring ZBook with 4 year warranty for 1500 USD. They last more than that.