Depends on how long you want to keep the data, I assume updating and maintaining for as long as you need it. I would buy two Lexar JumpDrive and back up everything on them in duplicate. I have been dabbling with computers and accessories for last 40+ years and I do not trust them one bit.
Just so you know I had two CF memory cards that I was using with my old Nikon Digital Camera 995. One of them was a Lexar bought in 2001 which was 128 MB and another one was Transcend bought 10 years later in 2011 or so. The Transcend got corrupted and I lost all the pictures in it, I had, of course, transferred all of them to my computer back then so nothing was lost. The card even after formatting in the camera is slow. The Lexar however is working perfectly even though it is 20 years old. I also have a Sandisk titanium 4 GB USB flash drive which I had bought sometime in 2007/8 that also has been erratic and is basically not usable. Talk about buying a nondestructive USB drive, this was far from it.
I am mentioning all of this to just let you know that I have ZERO faith in anything computer-related. Three things are the major culprits as I have experienced them over the years, virus, corruption, and failure. It is one of the three that destroys important data. I am lucky I never had a virus infection, but surely corruption of files and device failure are two things I have been through a few times.
Good luck with whatever you decide to buy.
Do you think I am now sounding like an old whiner now?