I know what the benchmarks look like with black magic, but from standard usage no video editing will I notice a difference if I get the 128gb model over the 256gb model? I have a 1TB external USB3.0 drive already formatted for apple file system, and all I really need it for is to house the thousands of pics and vids me and the wife shoot with our iphones. Will I feel the slower read speeds with the 128gb model over the 256gb? The size difference is of no concern.