I'm 18 years old, starting first year university in September. I'm going into business, and will be taking courses such as Statistics, Economics, Math, a Computer Science course, and a course on Business & Environment. I'm thinking I'll be using Microsoft Office (already installed), and maybe iWork. I purchased my Macbook about 2-3 years ago, and I'm wondering if Macs are good for business, or should I switch to a PC laptop. Any suggestions?