Almost eight years ago, I started using PDA starting with Palm111. Slowly my paper dairy(Time Management) went out of sight.Fast forward to two years ago,I discovered moleskine notebook and started to write again on paper. Now, both of these 'devices' are with me whenever I go out from my house.
My Treo680 is mainly for my communication needs-text messaging,call,email,Twitting+ some music and moleskine for my ToDo List and notes.When it comes diary function,I use both.
Both have their strengths and weaknesses-so I need both of them as my tools for my personal life as well as for business.