I think that I've managed to read all of the sci-fi stuff now with the exception of Look To Windward, and it's usually consistently better than the normal fiction he writes. I haven't read all of the Iain Banks stuff, but there are some shockingly poor books in there. Dead Air is amongst the worst books I have ever read, and The Business was really disappointing. I'm not looking forward to the new one. Having said that, Banks has written some of my favourite books. As far as sci fi goes... The Algebraist, Excession, and Against A Dark Background. Regular Fiction... The Wasp Factory, Walking On Glass, The Crow Road, and The Bridge. All fantastic books. I really love the structure of his novels as well. Three or four storylines that seem to have nothing to do with each other, that eventually come together in the end.