TheAlaskanSandman said:
I have also been looking into the pros and cons of the 4k versions and whether they are worth it. They are not. They were filmed in 2k and upscaled. So doing mine in 1080p and upscaling would be equal. Plus, movies never render vfx above 2k, even if the movie was shot in 4k. So after the research and debate ive decided to stick with the bluray copies, but may try to use their atmos soundtrack.

Personally, got no problem with that. The upscaling isn’t needed.
If you want to use the atmos track, make sure it is real atmos. Often the studios use this as marketing bate and there is no real atmos track or at least only just one or two scenes.