I recommend going to https://mobileread.com/forums https://mobileread.com/forums to read about user experiences with Onyx and other makers. They are interesting

I recommend going to https://mobileread.com/forums https://mobileread.com/forums to read about user experiences with Onyx and other makers. They are interesting devices but the support level is not at the same level as a Kobo/Nook/Kindle. I used to have a Boyue Likebook Mimas, which was a great ereader hobbled by a slow processor and itchy software.