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.
On reflection I am not sure about this amp. They have clearly taken the original outside the box so to speak and its still very wide. Too wide for many modern cabinets,
After reading @Thor's post I realised that I was feeling crap last night and singing was a struggle. Add that to the other issues and the better half suggests I don't do anything rash. Today I have a sore throat so that has to be taken into account. However the basic issues persist and will have to be addressed. Thanks for the support chaps.