R2Peepoo: I bet that's The Furies, by Keith Roberts. will you sell me your copy?
I love post apocalypse fiction, too. AM currently tinkering with my own If Zombies Happen, well sort of, novel which focuses on the practical difficulties of trying to cope with the End Of The World when you have a toddler and don';t drive....
My thoughts: The Stand - I have always liked this ever since I was a teen, but on recent re-reading I kept thinking, so what was happening in the rest of the world while the Yanks farted about playing my god's bigger than your god?
The Passage... Well it's not bad. But I did get a bit narked when I got to the end and it, er, wasn't the end and there's two more books to come. FFS mate you;ve had 700 pages already, could you not have got to the point? Cutting out the interminable fucking colonists would have helped.
I recommend, if you can get hold of them, King Blood or Blood Crazy by Simon Clark, there's a bloke with a post-apocalypse obsession.
Also, though it's not quite the same genre, the Bold As Love quintet by Gwyneth Jones: I am obsessed with these books even though they are massively flawed (she's an awful clunky dialogue writer and there seems to be a lot going on that she doesn't actually tell you about...) there is something about them that really touches something in me.
And the one that inspired me to start writing my own but only because it's so shit: Breeding Ground by Sarah Pinsent. Utterly, utterly ludicrous and unpleasant.