If you get a reader, I’d suggest Blu-Ray 4k/UHD rather than standard Blu-Ray. You can still read standard Blu-Ray. My guess is that Blu-Ray UHD will be the final significant physical video format.
4k blurays are usually more expensive though, as are the players, and aren’t really that noticeable of an improvement unless you have a particularly large TV. It’s much more affordable to stick with standard 1080p blurays.
I think I’d go for CDs, I could get a blu ray reader to also collect movies
If you get a reader, I’d suggest Blu-Ray 4k/UHD rather than standard Blu-Ray. You can still read standard Blu-Ray. My guess is that Blu-Ray UHD will be the final significant physical video format.
4k blurays are usually more expensive though, as are the players, and aren’t really that noticeable of an improvement unless you have a particularly large TV. It’s much more affordable to stick with standard 1080p blurays.