J.G. Farrell’s Troubles has the Lost Man Booker Prize by winning the popular vote (by a landslide — 38% of the vote against five other competitors).
I think Troubles is an excellent choice. I might have voted for it myself, had I voted. I might have voted had there been a bit more time to get through the books. That was one of my major problems with this award: for most, there was too little time to read all six books, particularly given that two were fairly large.