I love my Drawmer CMC2. It's quiet, turning the unit on and off doesn't cause any monitor noise, speaker switching is silent and the phase reversal and mono switches are great tools for helping troubleshoot problem mixes.
My only issue was that ordering mine from Thomann for use in the UK, the unit was sent with a Euro plug PSU, and a totally useless 2-pin to 3-pin plug converter that physically couldn't fit on the PSU. The Drawmer PSUs for these originally used to come with slot-in pins for a number of different countries, but I found out from Drawmer that they had stopped doing this as it was expensive and wasteful. So Thomann only have the Euro 2-pin adapter pins in their stock. The very nice Drawmer people sent me a UK set of power pins for my PSU free of charge, but Thomann really should add a warning for UK customers. So whilst I have every respect for the CMC2 itself, if you are in the UK, I'd strongly recommend buying it from a UK based store.