I also received an error message - cyclic redundance checkThat's a hardware error where the data in a sector does not match up with the number stored for verification. You were lucky that it was recovered. The only thing that may have caused that is if you lost power while the drive was writing data that is not the fault of hardware. When the hard drive writes data it also counts the number of bits that are active. Then it writes that number at the end of the sector.
That said I would personally consider another back up drive/device. Assuming the crc error was NOT as a result of a power failure or maybe a static discharge causing the crc not to be written. Otherwise it could happen again and not be recoverable. But the fact that is was recoverable this time is a pretty good indication it MIGHT not hardware.
It seems as if you already have a back up of your WD Passport on the Seagate. I would suggest replacing the WD with a NAS that runs mirroring and keep the Seagate. I have an inexpensive Iomega NAS that mirrors and if I have a drive failure when I replace the faulty drive it will automatically restore the replacement drive. I personally have Seagate drives in mine. I also have it on a battery. As far as brand I will say if man made it - it will break. Over the last 20 years I have seen less failures with Seagate. I also have some WD 4gb disks that still work and they are over 12 yrs old. My recommendation is never to buy the least expensive but somewhere in the middle of the line up. The most expensive only features faster read and writes which not necessary for audio streamers.