I'm not really into Capture One. Reviews say it's usually slower to adopt new camera formats, so migrating to Capture One would only worsen the situation with the prospective raw-processing workflow.
Also I use LR + PS and this combination is far ahead of Capture One in terms of the functionality.
I used Adobe Lightroom since it was a beta version, along with Photoshop and it worked really well for me. I still have them and use them from time to time but with the latest CaptureOne iteration I find fewer and fewer reasons to go into Photoshop.
CaptureOne now has layers, it has quite good healing and cloning tools now and it's all parametric. All adjustments are tiny little text files containing those instructions, not huge tiff files, like you get from Photoshop.
To put it bluntly, using the "Auto" button in CaptureOne brings the files closer and faster to the desired output than Lightroom. Of course, that's only the first step; sometimes it works, sometimes it doesn't and then I simply undo. More often than not, it does work quite well, and the file looks very close to Canon's DPP, which I think it's the best to mirror the intended output set in the camera.
So, I use all of them, DPP, CaptureOne and Lightroom, as I use macs and Windows computers. They're just tools, a bit fancier that hammers
I guess I could say the same about cameras themselves...