You'd be better off buying the Phone/PDA Hybrid and just turning off the phone portion. More and more its going to be harder to find just a PDA. I would say try Dell but they quit making the Axim series and I have no clue what HP is current doing with their PDA Series. Good luck with the hunt...
iPAQ 110. It is the current HP product. They are available at CompUSA and other stores for about $299. HP has a deal going with a $60 off cupon. You might have to search the web some to find the info.