Not really relevant. Obviously you want fast I/O for your OS storage, but for external storage that's mostly going to be used for music, videos, and images, it really doesn't matter how fast it is.
> there is no reason to make a performance sacrifice like that in 2019.
> 64 GB: $1099
> 256 GB: $1249
> 512 GB: $1449
Cost is a reason, not having 40k images to load is another one. We clearly don't have the same sacrifice to do sadly.