I am an owner of Zi 5500 (Yeap, an old PDA, but hey, it works fine )
After I bought an IPOD (2G, 20GB 2nd hand@ ebay)
When it comes to musics, IPOD always has better sound and more friendly interference and don't have to swap cards for changing songs (OF COZ!! )
I left my Zi untounched for a month...
I had bought the Targus wireless keyboard for notes taking, but found it rather useless when it comes to graphs and numerical formlas..
I had also bought the WiFi CF card as well, but I rarely found Wi-Fi spots...besides, my Browser (Opera 7.3 + Konqueor) crashed A LOT!!! ( I can't never login to yahoo or hotmail or others email accounts..)
For the PIM, I actually found it too troublesome to use.....might be my cellphone (Sharp GX25 is better....)
News reading......I found it too clumsy to "compile" the news website to PDB format.
I actually used it for manga (Jap-comic) reading, but found it too small to read....:/
And I rarely play games.........
Might be I can add a GPS for my Zi when I am able to drive...(soon)...
But the configuration really killing me.....(esp I am a Window user, know nth abt Linux except Zi)
I am kinda lost w/ my Zi......
How abt you share your experiences of your Zi,
I guess that help me a bit