the 10 sliders will control 10 tracks in sonar,the 8 knobs will control pan L/R on 8 tracks,and it has its own transport system.
this makes hands on more than mouse clicking.
i use this controller along with the vs 20 so i have 18 sliders/a slew of panning knobs and assign some of the vs20 knobs for Solo.Mute.
and the m audios buttons for loop recording,exc.
the best thing about the vs 20 is this..
it has two remote control inputs for foot switches.
i use 2 fottswitches with this set up on the vs20.
one foot pedal controls PLAY/STOP
the other foot pedal controls REC/PLAY (punch in)
so i usually ever have to take my hands off the guitar,because my foot pedal controls play/stop.
and punching in by stepping on a pedal is amazingly easy bro.
also has a input for a wha pedal.