Hello, all, These 2 devices are so different in many ways that a direct comparison is not truly realistic. The Pack Mate has a Braille display; the PDA does not have one thus far. The keyboard of the Pack Mate is more or less a Perkins-style keyboard; The PDA keys are much smaller and closer together and this makes them harder to use than the Pack Mate. The word processor in the Pack Mate is quite powerful and many of the "cord commands are similar to the Braille 'n Speak system. The PDA uses a navigation system which is considerably different I believe that our little units are better in terms of accessing menus and making changes to settings than is true of the Pack Mate. The Pack Mate is MUCH larger and heavier than our units. We can play talking books and other book formats and I don't think the Pack Mate can do these things. If I had just one choice to make as to what unit I should buy, it would be the PDA hands down! Joe G.