ok, i know I am a few years behind the curve, but I finally got a 5500 from Ebay.
I am enjoying the new toy, and have observed the following (sorry for the palm comparisions):
ROM Version: 2.37

The bad:
Can't find a console app in the menus, and I dont have the CD, or a cradle, just the charger. Battery life (as this is used) seams to be really, really bad. Hancom word is horrible by today's standard, cant seem to open large DOC files. PIM APPS seem kind of complicated. Its easy to tell why this thing didnt really take off for the average "PDA user"
Palm os vs stock sharp ROM is easy win for Palm when viewed as "PDA" only.
The Good:
Operates much faster than I was expecting. Multi tasking rocks! (Palm os 5, really, really needs multi tasking) Love the hidden keyboard, Like the SD and CF slot, and like that I can beam items from Z to my other palms and back. Like most of the other built in apps (except for Hancom). Opera looks cool (need to get a wifi card though to really try) and really like that it runs Linux!
I think i want to try this KO/PI you guys talk about so much, and flash with cacko/Crow rom that moves home to SD. And I want to try textmaker and VNC.
Offroadgeek, thanks for the great site. Also thanks to all the people that have put so much info up on this site! I am making a donation as I type.
I think I have a lot of Forum posts and writeups to read, and a lot of things to add/change
I think i need to get a Clamshell model!