I'd like to find a small, but great sounding mixer that could serve as a standalone live mixer and also serve as computer audio interface and control surface.

the Yamaha O1X looks like it might be an excellent choice. My main questions are:

1) I realize its digital, but does it sound as good or better than a Mackie VLZ ?

1a) how do the EQ, compression sound?

2) As an audio interface, does it sound as good as Aardvark, Echo and similar-priced audio interfaces?

3) Does it work well as a (Sonar) control surface?

thanks!
-Qua