Thank you for sharing your thoughts on this. Sony: I haven't used them but considered buying one until I read about the restriction to PDFs. Onyx: I bought th

Thank you for sharing your thoughts on this. Sony: I haven't used them but considered buying one until I read about the restriction to PDFs. Onyx: I bought the Boox Note and so far it's the best e-reader I owned. The refresh rate is good enough to use some Android apps but I don't really need them as I use the device for reading and annotating / note-taking. Remarkable: I didn't buy it because of the strange file format support and though it runs on linux it appears to be even more locked than the Onyx. Amazon: No comments on this other than "nice for reading certain formats". Surface: Has no eInk - I think it can't be compared to the other devices. That is true so I think we just have to wait for this device to be invented some years from now.