Advantages Portable, synchronisation, screen, has a keyboard, good internet connectivity
Disadvantages Keyboard a bit small
Advantages Nice keyboard, pretty zippy
Disadvantages Design tradeoffs to save space cause problems
Advantages Color touch-screen, modem, easy to use, great expansion possibilities, good keyboard, dictaphone, excelent alarm functions, easy synchronisation.
Disadvantages "Heavy screen", not for outdoor use, battery power.