How are they failing on you? Do they physically break or do they not work when plugged in and give errors?

If it’s the latter, it’s typically because memory sticks have inferior controllers comparatively to better quality SSD’s, and that said, not all are made equally in terms of quality NAND (memory) and controllers

Long story short, Samsung stuff is a safe bet

If you’re looking for a tough memory stick check out the Samsung BAR usb