This question is asked several times a day: What is the best PC to buy? Or should I buy 
a mac? This inquiry usually is asked after a computer dies. Our answer, which is entirely subjective, is: We like Dells, Lenovos, Sonys, and Macs. And it depends what you’re using it for. Our favorite laptops are the Dell Latitude series, Lenovo x series, and Sony Vaio. On the Mac end, we like the new Macbook duo Core series and are not sold to highly on the Air Book.
For PCs, we still opt for Windows XP Professional, not Vista, and recommend 2GB of RAM and at least 80GB of hard drive space on a laptop and 120GB of space, if not 250GB, on a desktop. The rest are “nice to have” options. We’re not big fans of Gateway, Acer, Asus, Toshiba, and Samsung. We are ambivalent about HP as they are good laptops, but loaded with unnecessary games and do-dads. When buying your PC, make sure the operating system CD or DVD comes with it in case any computer repairs or re-installs are needed.