I've had a lot of different flash drives over the years. Some of them have had their own pages before, Kingston and Hortentia being some of the more recent ones. Currently my setup involves two main USB flash drives, Gavriela and Gabriel. They're twins! They are both red Kingstopn Data Travelers with a capacity of 128G, their contents are set to mirror eachother using the robocopy command below.

I've trialed a lot of different backup methods to keep gavriela and gabriel synced, and as at present the one I'm finding the most efficient is to run the above robocopy command every sunday, which essentially copies any new files/changes from gavriela to gabriel. I then also run it every so often with the robocopy going from gabriel to my internal SSD.