@zank:
Most users don't even use all the software/features preinstalled on a cell phone, let alone add new ones. And you can install third party software on it if you want...I have done it personally. Just search for LG Viewty software on google.
Its synchronisation software is excellent and very userfriendly. No issues with backing up or restoring your PIMS.
I don't know about the 500 entries thing, but again for most people it would be enough.
Neverthless, every cell phone has strong and weak points. Viewty was marketed as a 5MP camera phone with 120fps slow motion video capture, and it performs these jobs excellently.
Lastly, why do you think I am switching to HTC Touch HD? I love customisation, and I need combination of multimedia and business features. Maybe you should also consider other options.