(Nobody is responding here, but I’m going to keep posting updates on what I’ve used/explored, as it might help others in the future.)
I got the Cloneralliance UHD Pro for Christmas and have been trying it out in place of standard screen recording for my streaming-only content. So far, the resulting footage has been comparable, which is both acceptable and disappointing.
The good = Consistent volume, bitrate, etc. Also no stuttering so far in any tests that has to be corrected by manually trimming a few seconds out or re-recording those parts. Good resolution.
The meh = I still get color banding and compression artifacts, especially in dark scenes. The color also seems slightly more washed out than in the footage I used to get via screen recording.
The best = Using this type of recorder has placed me back outside the rat race of streaming copy protection software vs screen recording software. No more battle with the black screens for hopefully a long while. I can also use the device to more easily record from my DVDs and Blu Rays, so hooray for a consistent process and result.
My attention has now shifted into trying to reduce those color bands in the simplest way possible. For now I am fiddling with settings in Handbrake, but I suspect my best option is going to be a newer computer running Davinci Resolve or Final Cut Pro with their respective effects.