On the CQ forums, the consensus is that both the mic preamps and effects are a class above the Behringer compacts. Of course owner bias might be a factor but to me the biggest difference is the build . My CQ20 is built like a brick outhouse.
Should never be in the low end, why did God give keyboardists left hands? OK slightly jokey but after many years with keys, I vowed never to play in a band with them again as the "i can play that so I will" mentality drove me nuts.