Although I have not heard them the new Dynaudio Evoke has got great reviews for the money from Axpona. I owned the C1's and later the C1 signature. Great monitor. I had an in home demo of the original C2 but did not care for the vertical sound stage. But that is my opinion. Contour 20's will have more punch than the C1's.
That said you do know that version of the Confidence has been discontinued along with the Evidence so pre owned pricing should come down.
Here is a link to current products and retail pricing
https://www.dropbox.com/s/tvyel0mvldyeroa/Dynaudio_Consumer_Buying_Guide_Spring_2019_low_res.pdf?dl=0&fbclid=IwAR0v8_GkGFc1eXyo706ogwM7agSQWRReKTFBHlqLY-UM05oWS0056MduVoQ
That said you do know that version of the Confidence has been discontinued along with the Evidence so pre owned pricing should come down.
Here is a link to current products and retail pricing
https://www.dropbox.com/s/tvyel0mvldyeroa/Dynaudio_Consumer_Buying_Guide_Spring_2019_low_res.pdf?dl=0&fbclid=IwAR0v8_GkGFc1eXyo706ogwM7agSQWRReKTFBHlqLY-UM05oWS0056MduVoQ