I need a new laptop solely for trading. A 17" screen is no more use to me than a 15" and so preferably I would take a 15" as weight is always a consideration. Also, because of the way that I trade I need my front end on a separate screen. It can be a 12", but the two screens will not fit on a 17" together. The whole package needs to be as portable as possible. I am interested to know my best options. My current machine is a piece of rubbish that HP had the gall to market as a laptop.