Before heading to PDC, I got my new cell phone - the Sony Ericsson W800i. Hence I didn't have time to put it through the paces, which I then did the past couple of days (how shocking: I never bring my cell phone to the USA). What a difference from the SPV C500! It has great battery lifetime, it starts up really fast compared to the C500, and important functionality is easy to reach.
There are a couple of smart technical choices that I love: for one, the wired headset comes in two parts - one connects to the cellphone and has the mike, the second part connects to the former using a standard stereo jack. Read: I can use my excellent Etymotic ER 6 with it! For phone calls, listening to music (it is after all an MP3 player shipped with a 512MB card in the box) as well as listening to the radio (yep, can do that too, nice touch).
It comes with a USB cable, and it connects to your PC by default as a mass storage device. No need for special software if you want to transfer files - how cool is that? (I already thought about abusing it as a "toolbox" instead of a USB memory stick) If you want to sync with Outlook et al, that is still possible - but you then need software (included). And of course the phone is being charged when connected to USB. Having to install ActiveSync so my C500 would charge annoyed me royally.
The only snag so far: you can use WAV files for ring tones, however, when trying to assign them to individual contacts they are not shown - they are filtered out. For the general ringtone it works fine. Definitely a bug, but not a real issue: Audacity to the rescue I converted the WAV files to MP3.
Finally, the design. My brother's opinion: "schwul" (faggy). I have to agree - white seems to be a real bane since Apple entered the scene of digital lifestyle accessories.