Depends on the work, I reckon. Made the stupid mistake p/m 5 years ago to buy an 'awesome' book (philosophy) in paperback while I had the choice to go for the hardback version. Okay, it was a €20 difference but the one I have, well, doesn't look cute and fresh no more.
A 'one time only read'-book like a nouvelle f/i.... um, paperback is fine, imo.
Um, bugger, too late again.... but @ Tallyman; non-fiction here mostly but believable and 'catchy' fiction I'm okay with too. (far fetched stuff.... no)
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Living space, wall colour wise; a mild yellow, light grey or 'classic' white?