After listening to all of Led Zeppelin IV and most of Pink Floyd's The Wall yesterday, I've decided to purchase another Led Zeppelin CD. Now, my only question is which one. I'm trying to decide between the ones listed above and need your help because I can't find demos of them anywhere. FYI: Early Days and Latter Days is a 2 Disc Collection (23 songs) of their "greatest" songs. TBB BTW: I'm also going to get Pearl Jam's Ten...I love that album.