I've just upgraded from the HP Jornada 820 and I must say I'm impressed.
I convert movies to play on the charmer and use pocket TV. I also prefer winampaq to the installed media player - might be removing the unwanted stuff a bit later.
The minimise on exit has been a problem, the lack of a task-switcher button on the today screen is a pain - I could quickly locate any running progs on the 820 and immediately shut them down.
The smaller screen is not a downer. The quality and backlighting on the new machine is a vast improvement over my old ppc.
I have started a thread on the connectivity issues affecting my new moto ht820 headset - I was assured that the charmer was a2dp ready - apparently not!