I have no idea what Verizon is, but assume it to be a mobile phone service provider. I use a PDA (iPaq) daily. It is certainly more convenient for me than the paper version, not least because if it is damaged, lost or stolen the data can be replaced easily by synching the replacement. Also, I find it easier to carry about than the paper version. My principal use is for contact information and navigation - I use it with a Bluetooth GPS. It is also handy for sending or retrieving email on short trips. Mine has a very useful program for showing the quickest routes on public transport, which I use all the time in London. I synch my iPaq with my Mac (using PocketMac), usually by docking it, but I can also do it wirelessly or by Bluetooth. I also synch the PDA with my phone (SE K700i). In the past I used Palms for some years, primarily because of their instant Mac compatibility, but find the iPaq better. Palm's support was very poor when I had problems. I have also tried a Motorola smart-phone, but find the PDA features rather basic and the whole thing cumbersome. I'm not convinced by the XDA-type PDA-phones (ever seen the screen when its been next to a user's ear), they always seem awkward to use as a phone. I'm sticking to separate phone and PDA. There are so many products available, with so many features, that the best thing is to draw up a list of features you want and then compare the items that meet your requirements. I have found Expansys
very good to deal with.