On February 26th, Kindle customers will lose the ability to download eBook purchases directly to their PC. If you want to switch to a rival eReader brand in the future, I suggest that you use the soon-to-be discontinued “Download and Transfer via USB” feature to archive your Kindle library.
I’ve bought myself a Boox Go Color 7. I love that one, even though it’s twice as expensive as a Kobo or Kindle.