Upscaling old DVDs to 4K (SciFi & Star Trek)

Hello community. Wanted to share something that I had “left over” from my upscaling trials (testing the workflow that has now become my standard), so you know I am still at it.
Please forgive me if I haven’t always hit the exact same frame or if the crop is a little off (I forgot to change the values), but since this was short ordered cooking, just focus on the visuals, ok?
New comparison images below.

Show: DS9, episode 1x06 “Captive Pursuit”

Show: DS9, episode 3x01 “The Search (Part 1)”

Show: DS9, episode 6x26 “Tears of the Prophets”

Show: VOY, episode 2x21 "Deadlock”

Show: VOY, episode 4x09 “Year of Hell (Part 2)”

Show: VOY, episode 6x26 "Unimatrix Zero (Part 1)”

And here you have the corresponding video samples (both SD-DVD from PAL-Source and 4K-Upscale - please remember that PAL has a speed-up to 25 FPS, which I corrected in the upscale towards 23,976 FPS, which is why voices sound different); free, no password:

Show: DS9, episode 1x06 “Captive Pursuit”
DVD: Dropbox - File Deleted
Upscale: Dropbox - File Deleted

Show: DS9, episode 3x01 “The Search (Part 1)”
DVD: Dropbox - File Deleted
Upscale: Dropbox - File Deleted

Show: DS9, episode 6x26 “Tears of the Prophets”
DVD: Dropbox - File Deleted
Upscale: Dropbox - File Deleted

Show: VOY, episode 2x21 “Deadlock”
DVD: Dropbox - File Deleted
Upscale: Dropbox - File Deleted

Show: VOY, episode 4x09 “Year of Hell (Part 2)”
DVD: Dropbox - File Deleted
Upscale: Dropbox - File Deleted

Show: VOY, episode 6x26 “Unimatrix Zero (Part 1)”
DVD: Dropbox - File Deleted
Upscale: Dropbox - File Deleted

Let me know what you think!