I've been using Sonarworks for about 6 months now and I couldn't live without it. I never really noticed how much my ATH M-50's hyped the bass until I tried it. I mean they were always great cans and I guess it's pretty easy to take that hype into account when making EQ decisions, but with Sonarworks everything just feels so flat and balanced and true.
I have both ARC2 and Sonarworks set up in a Pedalboard2 preset, and I use Virtual Audio Cable to route all system audio to Pedalboard2. So I can watch videos and listen to Spotify with both ARC2 and Sonarworks correction. I even find myself flipping Sonarworks on when watching a YouTube tutorial, because it makes the narration sound so much better.