First let me say I'm simply a hobbyist, not a Pro installer.
As to image quality specifically, effectively no difference if comparing like models of Dahua cameras. For instance Starlight CVI cams mostly use the same sensor as their IP Starlight counterparts. Are there certain features that some IP cams have that CVI cams don't yes, a few. The biggest single missing feature with CVI cams is not having the ability to have separate Day/Night schedule with different Exposure settings, though there are ways to imitate this.
I run CVI cameras at 3 homes, also have a number of IP cams I manage.
As to installation, the advantage goes slightly to IP cams as you can run a number of cameras to a single switch and then only one or fewer lines back to the NVR. With CVI, all cameras have to terminate back to the NVR/XVR. Though on small residential homes, I dont think it makes that much difference. By the way, you can run CVI cams on
Cat5 as well as coax as I did, you simply have to add a $3 video
balun at each end.