"Good" really depends on what you're after. Do not use CalyxOS if you care about security. They are significantly behind in implementing security patches, regularly. You are in some way more vulnerable with CalyxOS than regular android on a pixel because you would get security updates faster on pixel. Additionally, the network permission of GrapheneOS is a paramount security and privacy feature. Also, GrapheneOS takes over all location services requests even if you use google services, making sure that even if google services are installed, google only gets location info whenever the location request is for the google services, not all/any services or apps on your phone. There are additional points too, but CalyxOS, while I don't want to bash them, should not be considered a secure OS the same way GraphemeOS is.