I used to have the Tungsten T and C - the former a neat little machine with awesome build quality - magnesium.Tthe C OTOH had a pretty good keyboard - very portbale IF playing device. But the functionality was rather limited compared to more modern platforms like Maemo, Sharp Zaurus or even a Pocket PC. As a true PDA though it's hard to beat.
What I disliked was the constant worries about free heap RAM, which was generally very limited on the Palm platform - not good for game system emulation.