[Mashimo]

You can download UHD disks if you want. I only have a 7 year old 1080p projector @ 100", so for me a 10 - 20 GB rip is fine.

[TacticalCoder]

I also only have a 1080p projector, no TV... 2 GB rips (not 20 GB) at 1080p are totally fine (and way, way, way better than any streaming service).

[Bud]

Even on a good 4K TV, 2GB rips (and definitely the 4-6GB rips you can often also find) are really quite adequate for a lot of movies if it's a modern codec and the rip has been done well. Some movies are a bit more challenging than others, of course.