Yes I know there are knockoffs but I have experience in IT and have done extensive testing with these USB sticks and they have proven to be good. They're not lightning fast, but the transfer rate is pretty decent and they hold up to the advertised capacity. If your USB drive is smaller, contact the vendor for reformatting instructions and full capacity will be available again. They work great on Linux and Windows 10; Sorry I don't know about their performance on Macs. The support people are very nice and these devices come with colorful straps. The price is fair for the products and it is convenient that they are sold in pairs. 64GB is the ideal size for many purposes.
Samsung BAR Plus 128GB - High-Speed USB 3.1 Flash Drive Titan Gray (MUF-128BE4/AM)
67 Review
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review
Kingston DataTraveler SE9 32GB USB 2.0 Flash Drive for Reliable Data Storage (DTSE9H/32GBZ)
69 Review
Game console Microsoft Xbox One X 1000 GB HDD, black
53 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review