David mentioned the Jan 9th 1990 performance as being a great one. I think this is the one from Rotterdam. If so, it was an amazing performance of Bad. It may not have been one of the longest ones, but vocally Bono was at the top of his game. He truly must have been tearing up his vocals on that one. I love when he issinging/shouting, "No,No,No,No..." It sends shivers up you spine.
karl