I picked up an HP iPaq to replace my flaky Palm Tungsten T5. The T5 would power on randomly and my WiFi quit. When I sent it out for repair (bought the extended warranty for $30 at the time), they lost my WiFi card and wouldn't replace it.
I upgraded to this so I've got Windows Mobile, built in WiFi, Bluetooth a 520MHz processor and two expansion slots.
I've got TCPMP on it as a media player and can watch full motion DivX at 320x240 at 30fps on this little beauty. So far I'm very happy with it. I benchmarked DivX 6 video playback at 77.8FPS. . . My 416Mhz Palm could only pull a 35FPS average. Better software, better platform in my opinion. We'll see how it holds up.
The tradeup cost me $30 as they replaced my T5 with this if I paid the difference. Not a bad deal.