>I use my phone as a reader sometimes but I still prefer a paper book. Though bookshelf space is a problem so I'm tending to think of books as disposable (so I buy a cheap paperback copy) or something I might want to keep (so I buy a nicely bound copy.) to try and keep storage down.

Phone's too small for me. Luckily got one Acer sub-laptop, with 8,5 inch screen, installed Calibre on it and was a happy camper while it lasted. Then it started choking - it's a bit old, bought 2nd hand six years ago. So I wiped it, installed linux mint, installed Calibre on it and, oh boy is it snappy again. Wakes up from suspended state in four seconds, runs smoothly. The battery lasts about 80-90 minutes, which is good - I need to get up and move a bit.