hehe well thanks for the advice guys, that was very helpful. I think I know exactly what to do now... I'll keep the old one's and get the new ones too - I could do with abit of prosperity.
Then I'll lend out the old ones to all my friends as an expression of my love for books as I bask in the nourishing glow of the new covers... And if I get at all hungry during this wonderful time I'll chew on my fingernails in anticipation of the sixth book that's coming out - Will it be any good? And how will it look sitting next to two different versions of the originals?... Will it match???