The question was asked ... "Which PDA is best"?
My $0.02 is "the one that you will use every day!"
Doesn't matter if it ic compaq, sony, palm, etc
Take the time to get familar with the features and
when you find one that doesn't hurt your head with complexity
and the one that is easiest for you ... buy it!!
Myself, I finally took the plunge with the palm m515.
and yes, I use it every single day
That is the key ... buy it and then use it!
Good luck in your search and again, invest some time
before you invest your money.