The best-made Spielberg film is Jaws - clean, tight narrative involving a tight group of three men and an incredible plot-driving machine in the form of a shark hunt. Jaws is edited better than most b-movies. In my opinion, the only better edited film which Spielberg has made has been Close Encounters. Raiders of the Lost Ark is well-made, but I think that the action set piece sometimes over-forced narrative cuts.
If I was stuck on an island, I'd want Close Encounters. Epic story, told efficiently - not even Lean could've outmatched Spielberg here.