I have been using an HP iPAQ pocket PC for the last 3 months and I love it! My Franklin Covey is in the garage sale pile never to be used again.
I use mine 99% for work / 1% for personal stuff. I love it because my company now uses MS Outlook so with ActiveSync - everything is continuously synced (email/calender/notes/task/etc.). This works for me because I use Outlook for EVERYTHING (my daily schedule, etc.) so I know that my PDA will always be updated (unlike a paper planner when I had to make sure stuff was written down).
I mostly use the "writing pad' feature when I'm in a meeting or if I'm out and need to write something down in a hurry, but it is easy to use though.
I don't use mine to surf the 'net or anything like that because quite frankly - I spend too much time on the'net as it is. If I need directions, movie listings, or something like that I just use my cell. I do have my PDA set to automatically download the "Our Daily Bread" devotionals, but that's about it for me and 'net.
I love mine