When I was new to VR last year I ended up downloading a bunch of 3k VR scenes. The max I could play on my setup was 5k. 4k was enough to get me excited though.
Watched a few of these 3k ones as they have actresses who don't have (As many) higher resolution scenes, but many have not as I gravitated toward 4k / 5k.
Finally I have a setup to watch 6k scenes. I've recently seen how much more clear 6K is (VR Bangers, and presumably SLR Originals too - will watch soon, and some smaller outfits)
[Yes, I know there is talk about 6k, not being true 6k, etc...but it seems more crisp and clear to me]
So..I think 6k is the straw that breaks the camels back for keeping 3k files around. Watching a few minutes of some of them and they just seem so dang grainy and unreal. Can see myself nuking some 4k videos too. That will free up hundreds of GB. Already been nuking a lot of 2-D stuff.
4k+ is the lowest I can go now (WankZ). Any 4k videos I watch would have to be pretty darn special / unique in someway.
When is 8k coming around? 🙂
Yes, I know there is some disagreement, about what is 6k or what isn't, but to my eye it looks a lot more clear.