My 16 yo daughter needs a new laptop. She has been using a Walmart door $150 door buster for the past 4 years. She hates it and I don't blame her. However, we really don't know what she needs. She wants to be able to use office for excel and word. She also wants it to be reasonably responsive. She will store and edit photos and videos. She is most comfortable with Mac products and we are thinking a MacBook air is the way to go. Any suggestions or caveats would be greatly appreciated. She would like it to last into college.