Two versions are linked, the 4GB one is the raw 1080p x264 Amazon copy, the smaller one is a compressed x265 copy. Both are identical. Go for the first link first (that’s the smaller x265 one), almost every device made after 2017 will be able to play it, if it doesn’t work, grab the larger x264 one in the second link. Both files are identical in quality, they just use different compression techniques.