I saw this question, and it got me thinking:

Do you prefer hardcovers, trade paperbacks (the bigger ones), or mass market paperbacks (the smaller ones)? Why?

Once upon a time, my answer to this would have come readily: mass market paperbacks, because they were cheaper and easier to handle. These days, it’s less clear-cut, as I’ve come to appreciate hardcovers and trade paperbacks more. I won’t deny that books in those bulkier formats are trickier to read; but there’s something about sitting down with a hardback especially that can give reading — well, ‘a sense of occasion’ is the best way I can think of putting it.

Actually, my favourite format of book is not listed in the question — it’s a mid-sized paperback, or smaller cased hardcover, which are less unwieldy whilst retaining that feeling of being special. I guess I appreciate books as artefacts more than I used to, but practicality is nice to have as well.