i don\'t want to start a war but this is my personal experience.
I owned an Old Casi BOSS in 1997 and this was good, normally used it to store personal references (phones, cards, notes, names, etc). Then on 1999 i get one Palm III and in 2001 a PalmVx.
On 2002 i get my first Zaurii since they (sharp) don\'t sell it on Mexico and i need to wait to get one from a friend until he go to US. Zaurii was awesome for me (more unix experienced).
I give to my brother (luser) the Palm Vx and he don\'t have any problem with that. I gave him my Zaurii and i take only 10 minuts to go back to the Palm Vx because (in his own words) \'the Zaurus is awesome but do more than i need\'.
As i can see if you want a PDA only for basic PIM stuff then don\'t chose Zaurus. If you want to get some knowldge on the way and test a powerfull tool (not a PDA, a Personal Mobile Tool) then Zaurus is the best.
By the way I HATE THE WINCE Pda\'s.
Just my $0.02