When I worked for a very large WINDOW company, we used these USB drives to handle 60-70 customers a day. OS reinstalls, Malware/Spyware/Virus scans, Paragon Backups, etc. Out of our 27 drives we had 3 fail in the span of 4 years. Very reliable USB drives.
https://www.kanguru.com/products/kanguru-flashblu30-usb3-flash-drive
https://www.kanguru.com/products/kanguru-ss3
https://www.kanguru.com/products/kanguru-flashtrust-secure-firmware-usb-3-0-flash-drive
Looks like Staples has the cheapest prices for these drives, free shipping to store: https://www.staples.com/kanguru-flashblu30-16gb-superspeed-usb-3-0-flash-drive-with-physical-write-protect-switch/product_IM18TN713