I made a short video of the TTS system at work and the Honda Music Link without the TTS used.
It shows what it sounds like and also has a comment on how easy it is to tell the difference between the Aux input and the ipod link when comparing sound quality.
Even my fiancee can tell the difference and usually she doesn't care or notice the things that I notice as an AV freak.
Here is the link
http://drknife.com/blog/index.php?itemid=39