The title of this post says it all, so feel free to skip this background. I catalog my books on LibraryThing. One of their discussion groups is called 50 book challenge, which is just what it sounds like: you post your intent to read some number of books over some period of time, maybe from a list, maybe just whatever, then update as you progress. 50 in a year is pretty typical. I'm seriously thinking of a Moorcock bender. I collect mass market paperbacks and have a little over 50 separate Moorcock titles. Can anyone tell me about the revisions M. made for the omnibus volumes? In your opinion, are any of them so drastic that you would recommend I seek them out rather than read the corresponding paperback(s)? For that matter, can you think of any editions of particular works that should be avoided at all costs? On one hand I'm fairly easy to please. On the other, given my age and (bad) reading habits, this will undoubtedly be the only time I read the majority of these titles. Thanks for any thoughts you might have about this question or the whole idea of a 50 best/essential/representative list.