I have 'downstairs' and 'upstairs' copies of LOTR, but the rest (e.g. HoME, The Sil. etc.) are all downstairs, and I have
very steep stairs, so I can't always be bothered getting off my bum to go and get them!
I have severe book storage problems as all the shelves in the living room, computer room and on the stairs are now full, and the only solution is a larger house.