Hi All, I am planning on upgrading from my 2007 white MacBook 2.2 GHZ Intel Core 2 Duo 1 GB Ram. I got the MacBook as a Christmas present in 2007 and it has been wonderful, no complaints. But it is time to upgrade! It is so slow! Anyways, I am not a gamer. I don't edit movies, music, or videos. My full time job is as an investigator and I am an evening division law student. Majority of the time, I have Chrome, Spotify, Evernote, Thunderbird, and sometimes powerpoint and word open all at the same time. So I would like something that will last 6 more years like my current laptop and capable of running multiple apps at one time. What are your thoughts? I would like a 15 inch, because I like the bigger screen, but that is a requirement. I am more worried about the longevity (I want my monies worth) and speed. Thanks!