As a long-time fan of the Maths having owned the og mk1 version back in the early-mid 10's this is a very wallet-friendly way of getting the power of the M back in your rack.
Minor nitpicks like minipots for the mixer/attenuverter section can be a hassle for precise edits. LEDs, knobs etc can look a bit dull on Behr modules compared to other brands depending on your taste. There's minor crosstalk/interference between the two function generators mostly noticable at audiorates where switching on/off cycling will slightly drop the cycle rate of the other.
But again, these are minor nitpicks and doesn't take away from the fact that this is still an amazing module at an even more amazing price. My only regret was not grabbing a second one before they sold out again ;)