Avid show the additions to their S6L range with new control surface options, from massive fader counts to 24 or even 16 and a new, lower cost DSP engine which gives you 112 voices instead of 148 or more.
So it now possible to enter the live mixing world at a smaller initial investment - starting at around 40,000$ for a complete system.
The AVID system is preferred by many touring bands as they can apply the same plugins they are using in the mix to their live sound. We've heard astonishingly like for like live/album sound from bands achieved through this system.
Deep look at the new generation interface