Bests & Worsts Reviews from Amazon

I bought this PNY Turbo 256GB USB 3.0 Flash Drive - P-FD256TBOP-GE from Amazon thinking it would at least meet it's specifications. However, it was very erratic when I tried to back up about 50 Gb of files from my Dell T7600 workstation's USB 3 front panel port. When I tested the PNY flash drive with Blackmagic's Disk Speed Test the write speed gauge was very erratic and would not consistently produce the same write speed! Then I used Crystal Disk Mark 5 to benchmark it. It hopelessly failed the 4k Random Write tests. (I have attached the Crystal Disk Mark 5 results for the PNY Turbo 256GB USB 3.0 Flash Drive - P-FD256TBOP-GE along with the results of the same test with a older San Disk Extreme USB3 flash drive. I returned the PNY and replaced it with a SanDisk Extreme PRO CZ88 128GB USB 3.0 Flash Drive also direct from Amazon.