Oh I totally agree Barry. 1 to 5 (not heard the live 4th yet) are all masterpieces in their own way. That's what I meant about going onwards and wondering if they match up to what went before.
Having mentioned the 4th, I wonder if anyone else has got anything to say about how expensive it seems to be. I clocked it at £37 in HMV, which equates to about $70 on the other side of the pond.