Depending on whom you ask, you're going to get different answers. I can tell you this: PDAs far outsell H/PCs. There are a couple reasons for this.

Many people would rather use a laptop rather than an H/PC. True, laptops are a couple of pounds heavier than H/PCs. But a laptop utilizes the full version of a Windows operating system, rather than a scaled down version. Many people prefer to carry around a couple of extra pounds rather than sacrifice a full working version of Windows.

A PDA on the other hand is something different that a laptop all together. PDAs contain essentially anything one might need from a computer when on the move. They contain e-mail functionality, fax functionality, and the ability to access special PDA formatted Web channels, or to browse ordinary Web sites (more on these later in the article).

Plus, PDAs can also easily share information with Windows-based or Macintosh computers. PDAs are not self-contained — they are designed to synchronize with a desktop PC and keep information up to date on both sides. Thus, what you'll find is that people usually carry a PDA and a laptop. This gives them more flexibility than just carrying around a H/PC (which is essentially part laptop and part PDA).