I got the Manta and I really appreciate that it's size is close to 8x11.5 paper. I have used it to consolidate all my paper notebooks to one. So much easier to find and much more compact. I also use it a great deal in my work on the road with instrumentation & control, sketching diagrams, electrical, and such which is not intuitive or bulky to do on a PC or on paper but which can then not be edited. I do not like using a iPad for this, but love using the Supernote. The feel is great, and no extra forced apps or accounts. The pen writes exactly where you put it so it's very natural to use. Still learning new useful shortcuts and tools with it. Have not tried moving anything to a PC yet so can't talk about that. My wife also enjoys drawing on it (she is a bit of an artist) and has high praise for it. There are a few little things like no paint can fill or some transformations when you select something. Also the battery last a long time and USB C makes charging easy.
Con
only one and it's very small is the boot time when it's fully shut down (~30 sec)