I have (half) of an unabridged (paperback) Toynbee. I haven't made a move on it, though.
I have all of a Durant. I've done all but three books as audiobook, which if I'm not mistaken is the equivalent of reading Lord of the Rings followed by Harry Potter followed by the extant Game of Thrones.
I wanted to get the pretentious edition but I discovered that Gore Vidal's copy was going for a song on eBay.