So you've decided to buy a Mac. Congratulations! Macs are great computers and your Mac will soon be a valuable tool for work, recreation, and communication. Perhaps, however, you're not sure which Mac to buy.You are not alone.There are many choices.Most people who switch to Mac have this same question. Which one? You've got three major choices in a desktop machine: the Mac mini, the iMac, and the Mac Pro. And you have three choices in a notebook: the MacBook,MacBook Pro, and MacBook Air.