If money is no object then the Sony Ericsson P900 or 910 is worth a look see. I have a P900 and really like it. It does use a stylus however but it has a built in keyboard for the P910.
I recommend doing research and knowing EXACTLY what you want and what each device does well. Check out
www.howardforums.com they have a lot of good info on phones in general and have a PDA section I believe.