Very timely post for me;

I fired up my old 6210 Navigator this morning in readiness for sale and compared the sound quality with my N900.

Interestingly, the mono-speaker on the 6210 plays music with greater overall clarity, IMO.

However, ringtones and system sounds (I have SciFi SFX activated by the slide, lock and unlock courtesy of Lockdaemon) all sound far better on N900.

Speech, especially stereo speech with alternate voices from each speaker sounds better on the N900 as do 'doppler effect'-type sounds like cars speeding past, etc.

Stereo speakers are definately better for me, but are not the 'must have' I once thought they were.