If transfer speeds are important to you, the Kingston DataTraveler HyperX 64GB USB 3.0 flash drive is certainly the drive to purchase. Our tests show you can write a 1GB file in less than ten seconds and read that same 1GB file in six seconds. Kingston has done a tremendous job of releasing a product that achieves the advertised 225MB/s read speed and came within 10% of the published 135MB/s write speed in a real-world large file transfers.