Depending on how you plan on inputting data to your Word doc while it's on your PocketPC, I might actually recommend the X30 instead.
If you plan on also purchasing an external keyboard to carry around for inputting data, then I highly recommend the X50v (if you're doing a lot of text entry, you'll probably prefer the extra screen space that VGA gives).
But if you're looking for MAXIMUM portability and minimum baggage, you might be better served with the X30 and a special keyboard available for it called the SnapNType, which is a mini-keyboard that attaches to the bottom of the X30:
SnapNType
Good luck whichever way you choose!