I bought this particular PDA to keep track of customer contacts & phone numbers when my husband started his own business about two or three years ago now. After quite a bit of research I chose this model over others mostly because of the vga 640 x 480 resolution. All the other PDAs at the time were half this size.
One of the pluses is that it comes with a titanium casing so it is extremely durable. In fact, my son (now 9) has used it as much as I have to play games on long trips. It also uses SD or CF memory sticks to store extra data which I have used for GPS when traveling.
One of the draw backs are that it uses a stylus and these little tiny sticks are super easy to loose. To replace them they cost about $10 for 3.