Has someone had good or bad experiences with a particular 
uaudio(4)-compatible device?  I have two applications:

 1. mp3-listening
 2. IP telephone calls

I will be using headphones for all this, so I don't want speakers.  I'm 
interested in:

 1. good compatibility with the driver
 2. good sound quality (mp3-listening)
 3. full-duplex (VoIP)
 4. small size, so I can carry it around with an hpcmips box as USB 
    starts to get solid over there.

in that prioritized order.  I don't care how much it costs.  If I actually 
manage to get all four, I'll laugh.  If you've been using uaudio, please 
just let me know satisfied you are with your device w.r.t. these features.  
Please reply-to-poster, and I will send a summary to the list.  Thanks.