Price-wise as well as width-wise there is this one too: https://www.modulargrid.net/e/bearmodules-matrix-mixer
Great value for the buck, practical, good feel, and the unipolar / bipolar switch is a great extra function.
B.
-- law-rah
I have this one too and I like it. It feels solid and I don't mind the little knobs.
I wanted to bring this thread back to mention the Ieaskul F Mobenthey modules by Peter Blasser (also of Ciat Lonbarde). The whole system is built for chaos.
My setup is built around those modules, and utilities to support them and help me manage the intricate feedback loops of modulation. 
Almost any system can be induced to generate chaos, if you have a feedback loop that includes a nonlinearity. Loop the end result back into the beginning. Make a LFO or VCO modulate its own frequency. Have a series of LFOs modulating each other, and then also modulating VCOs, and then take the output of the VCOs and have it feed back and modulate the LFOs. The snake eats its own tail. Tails.
here's one example
