Ok well got my new Pocket PC phone and so far it completley owns the Sidekick on so many levels.
First the sound quality is much improved, also the hands free stereo kit is amazing.
You can use wav files as ringtones and is also a voice recorder. GPRS (wireless internet) is just as slow but that will change if/when T-Mobile switches over to EDGE.
Now as a pocket pc this thing rocks, I mostly have been using it for teh romz and loving it.
I have a multi emu on it that plays SNES, NES, Genesis, Master System/Gamegear, Gameboy, GBA, and TG-16 roms on it.
There is nothing better than playing Bomberman 94 while on the go.
The emu that I am using allows for custom buttons and also has an on screen controller for those without enough buttons. I have my screen roatated to a widescreen mode like the NGPC and GBA. I only have access to 3 buttons there so haven't tried SNES or GBA games on it yet and probably never will.
Overall as a rom machine this thing has the capabilities to play all the great classics but I was unable to get MAME working on it yet due to being unable to configure the buttons.
The MP3 playback is superb as well, comes with Windows Media Player 9 out of the box and supports all the formats for it as well.
Once I get a bigger memory card I am going to try the DVD to Pocket PC software to see how it works, as well as trying out the pocket versions of Everquest, Age of Empires, and Rayman.