I am using plain vanilla Palm Datebook on both handheld and desk top but I am not all that happy with it.   DateBkV from PimlicoSoftware was recommend to me but I have not tried it yet.  What do you think works well with GTD and what benefits are obtained?  I would like to be able to print out the week in a form that is not a vertical list but a horizontal, hour by hour slice of the calendar.  It would easier for me to juggle things around that way. I would also like to easily keep track of how long I soend on tasks as I go through the day.