When you're planning to buy a new laptop, screen size is a major factor. A smaller screen means greater portability and often a lower price. Larger screens offer more flexible working methods.
If your laptop is a desktop replacement and rarely leaves home, 17 inches or bigger makes sense. If you're regularly on a plane, anything above 13 inches can be tricky. Where do you fit in?
Tell us why you choose the size you do in the comments.