Check the MyDeepGuide episodes for the Elipsa and Supernote to compare for yourself. The idea that Wacom is bad is nonsense. Voja has many Boox reviews as well, if you want to go the Android route.
https://www.youtube.com/watch?v=Q6kA3-XvvmE
https://www.youtube.com/watch?v=0h29n-T-2AE
Note that Supernote has been consistently updating its software since release and has added many new features over the years, so the software is in a better state now than it was at the time of the original review. You'll need to browse the subsequent Supernote update videos to learn about the various improvements since then. Kobo hasn't really done anything with the Elipsa software, so the original review still stands as far as what you'll get from the Elipsa today. (The reviews are in multiple parts. I've only linked to part one for each device.)