Korganizer/PI (platform independent) changed everything for me. Since zautrix released ko/pi for the Z, all other PDAs are irrelevant if they don\'t run ko/pi.
I have run KO on the desktop for a long time (I\'ve been running a Linux desktop for about three years now), but been frustrated by 1) the inability to reliably sync it with my Palm devices, and 2) the fact that KO was tied to my desktop, which limited it\'s usefulness. now that KO runs \"in my pocket,\" I seldom use the desktop copy for anything other than alarms. KO is 10x as useful on my Z than on my desk, and 100x more useful than any PalmOS software I ever used.
I\'m running an SL-5600, and I\'m getting about 5-8 hours battery life with the backlight turned down one notch, and not messing with multimedia stuff much. Even with the backlight on full brightness, the larger 5600 battery offers significantly longer run time.