I prefer ebooks too. If I am really interested in the book, I buy the print version of the book though, if I cannot find an ebook version of high quality (that excludes many epubs, as formulas are typeset horribly in all of them; so a high-quality ebook is usually in PDF format). I am toying with the idea of sending these print books to somebody who (destructively?) scans them for me as PDFs.
For reading, I prefer my iPad Pro, although when looking at multiple books at the same time, I also put them up on one of my monitors.
