I'm a teacher who will mainly use this for online assessments and word processing, google, and Facebook for my personal use. I know that more memory is better but I'm not sure which is the better laptop. The Dell is 15.6 inches and $629.99 and the HP is 17.3 inches and $599. which makes me think (due to the price) that they are probably equivalent? I also want to be able to burn music CDs.