Thanks for the info!
Two other questions:
1) is one of them significantly easier to use than the other one (more stable / intuitive, or can be made so through appropriate initial setup).
2) I see that both can play mp3. Is one of them significantly better than the other for:
- ease of use of the library (folders etc)
- music quality if played through external speakers (plugged in the headphone line)
- music quality if played through the embedded speakers