I received my Handspring Visor Deluxe for my birthday, 4 months ago and I use it everyday!
The datebook has so much more room in it than a regular dayplanner that you write in. Instead of scratching off a done item, you just check it off or delete it. It has space for the times 12am-12am so you can easily see what is due next. It has an alarm to remind you of an event that can be set minutes, days, and hours ahead. Your regular dayplanner cant do that!
The Visor Deluxe has 8mb of memory and the tools that come with it do not take up much space at all. It comes in about 5 colors and an easy tutorial guide built in.
It has a To Do list, as well.
You can keep track of your shopping, especially if you travel often for business. Which also the City Time comes in handy as well. It lets you set up 4 different cities showing you the time of day it is.
You can download other programs and games in to it, as well. The Visor Deluxe comes with around 4 games to be downloaded on to it.
You can beam items to another persons Visor, as well, allowing you to share information!
It also comes with a cradle so you can download items on to it and save your information to your computer for back-up.
You have to use batteries, so I have bought rechargable batteries along with a battery recharger.
It has a backlight so you can work with it in dark areas, like on a late-night flight.
I recommend Handspring Visors for anyone having a busy schedule. Its good for college kids keeping track of their assignments and a calculator, too!