Thanks for your recommendations. I think part of the reason why I don't like speed-reading, is that I haven't found one that works for me. That said, I'm always open for options.

By biggest concern about speed-reading is about knowledge retention. Yes, I may be able to read 100 books in a year, but the question is, how much can I remember and apply in real life?

I don't bother too much with reading fast because I want to have to the time to let the ideas and insights sink in before I hop on to the next book.

Regarding my preference on the reading device: For me, paper first, then anything else with the right size (I hate reading on my phone.)