I just got a Tungsten T
I've had my new Tungsten T for about a month now, and I'm really enjoying it. I had a friend's old M505 for a little while that I used as a "tester" to see if I would be able to give up my paper planner, and obviously, the answer was "yes". I've ditched my backpack and only carry a small bag between work and home.
The graffiti on the T is excellent. I'm even able to use it fairly effectively on bumpy bus rides into work. I think it helps that my handwriting is fairly neat to begin with, though. I did purchase the small keyboard for it, and it works very well also.
The voice memo is handy when you are running between meetings and think of something that you've just got to do later in the day.
I'm not running any special planning software on it - just using the basic Palm desktop, and it's fine for me. I've been working on implementing GTD for about 6 months, and this ties in easily with my new system.
I've set up the MP3 player too - very cool!
My 2 cents, anyway...