I've had a Mackie Big Knob for quite a while and I love using it. I have 3 sets of Monitors connected to it to A, B, C my mixes. It has various source inputs , talk back feature for my Head phone Cue Mix. Dim Mute, two head phone outputs, and separate level controls for each. I just loved using it, and there are still a lot more features.
I am keeping my original one as it Rocks!!!